voyager 1 messages

The most distant human-made object

No spacecraft has gone farther than NASA's Voyager 1. Launched in 1977 to fly by Jupiter and Saturn, Voyager 1 crossed into interstellar space in August 2012 and continues to collect data.

Mission Type

What is Voyager 1?

Voyager 1 has been exploring our solar system since 1977. The probe is now in interstellar space, the region outside the heliopause, or the bubble of energetic particles and magnetic fields from the Sun. Voyager 1 was launched after Voyager 2, but because of a faster route it exited the asteroid belt earlier than its twin, and it overtook Voyager 2 on Dec. 15, 1977.

• Voyager 1 discovered a thin ring around Jupiter and two new Jovian moons: Thebe and Metis.
• At Saturn, Voyager 1 found five new moons and a new ring called the G-ring.
• Voyager 1 was the first spacecraft to cross the heliosphere, the boundary where the influences from outside our solar system are stronger than those from our Sun.
• Voyager 1 is the first human-made object to venture into interstellar space.

In Depth: Voyager 1

Voyager 1 at jupiter.

Voyager 1 began its Jovian imaging mission in April 1978 at a range of 165 million miles (265 million km) from the planet. Images sent back by January the following year indicated that Jupiter’s atmosphere was more turbulent than during the Pioneer flybys in 1973–1974.

Beginning on Jan. 30, 1979, Voyager 1 took a picture every 96 seconds for a span of 100 hours to generate a color time-lapse movie to depict 10 rotations of Jupiter. On Feb. 10, the spacecraft crossed into the Jovian moon system and by early March, it had already discovered a thin (less than 19 miles, or 30 kilometers, thick) ring circling Jupiter.

Voyager 1’s closest encounter with Jupiter was at 12:05 UT on March 5, 1979 at a range of about 174,000 miles (280,000 kilometers). It encountered several of Jupiter’s moons, including Amalthea, Io, Europa, Ganymede, and Callisto, returning spectacular photos of their terrain, opening up completely new worlds for planetary scientists.

The most interesting find was on Io, where images showed a bizarre yellow, orange, and brown world with at least eight active volcanoes spewing material into space, making it one of the most (if not the most) geologically active planetary body in the solar system. The presence of active volcanoes suggested that the sulfur and oxygen in Jovian space may be a result of the volcanic plumes from Io, which are rich in sulfur dioxide. The spacecraft also discovered two new moons, Thebe and Metis.

Voyager 1 at Saturn

Following the Jupiter encounter, Voyager 1 completed an initial course correction on April 9, 1979, in preparation for its meeting with Saturn. A second correction on Oct. 10, 1979, ensured that the spacecraft would not hit Saturn’s moon Titan.

Its flyby of the Saturn system in November 1979 was as spectacular as its previous encounter. Voyager 1 found five new moons, a ring system consisting of thousands of bands, wedge-shaped transient clouds of tiny particles in the B ring that scientists called “spokes,” a new ring (the “G-ring”), and “shepherding” satellites on either side of the F-ring—satellites that keep the rings well-defined.

During its flyby, the spacecraft photographed Saturn’s moons Titan, Mimas, Enceladus, Tethys, Dione, and Rhea. Based on incoming data, all the moons appeared to be composed largely of water ice. Perhaps the most interesting target was Titan, which Voyager 1 passed at 05:41 UT on Nov. 12 at a range of 2,500 miles (4,000 kilometers). Images showed a thick atmosphere that completely hid the surface. The spacecraft found that the moon’s atmosphere was composed of 90% nitrogen. Pressure and temperature at the surface was 1.6 atmospheres (1 atmosphere equals the average air pressure at sea level on Earth) and minus 290°F (minus 179°C), respectively.

Atmospheric data suggested that Titan might be the first body in the solar system (apart from Earth) where liquid could exist on the surface. In addition, the presence of nitrogen, methane, and more complex hydrocarbons indicated that prebiotic chemical reactions might be possible on Titan.

Voyager 1’s closest approach to Saturn was at 23:46 UT on Nov. 12, 1980, at a range of 78,000 miles (126,000 kilometers).

Voyager 1’s ‘Family Portrait’ Image

Following the encounter with Saturn, Voyager 1 headed on a trajectory escaping the solar system at a speed of about 3.5 AU per year, 35° out of the ecliptic plane to the north, in the general direction of the Sun’s motion relative to nearby stars. Because of the specific requirements for the Titan flyby, the spacecraft was not directed to Uranus and Neptune.

The final images taken by the Voyagers comprised a mosaic of 64 images taken by Voyager 1 on Feb. 14, 1990, at a distance of 40 AU, of the Sun and all the planets of the solar system (although Mercury and Mars did not appear, the former because it was too close to the Sun and the latter because Mars was on the same side of the Sun as Voyager 1 so only its dark side faced the cameras).

This was the so-called “pale blue dot” image made famous by Cornell University professor and Voyager science team member Carl Sagan (1934-1996). These were the last of a total of 67,000 images taken by the two spacecraft.

Voyager 1’s Interstellar Mission

With all the planetary encounters finally over in 1989, the missions of Voyager 1 and 2 were declared part of the Voyager Interstellar Mission (VIM), which officially began on Jan. 1, 1990.

The goal was to extend NASA’s exploration of the solar system beyond the neighborhood of the outer planets to the outer limits of the Sun’s sphere of influence, and “possibly beyond.” Specific goals include collecting data on the transition between the heliosphere, the region of space dominated by the Sun’s magnetic field and solar field, and the interstellar medium.

On Feb. 17, 1998, Voyager 1 became the most distant human-made object in existence when, at a distance of 69.4 AU from the Sun, it “overtook” Pioneer 10.

On Dec. 16, 2004, Voyager scientists announced that Voyager 1 had reported high values for the intensity for the magnetic field at a distance of 94 AU, indicating that it had reached the termination shock and had now entered the heliosheath.

The spacecraft finally exited the heliosphere and began measuring the interstellar environment on Aug. 25, 2012, the first spacecraft to do so.

On Sept. 5, 2017, NASA marked the 40th anniversary of its launch, as it continues to communicate with NASA’s Deep Space Network and send data back from four still-functioning instruments – the cosmic-ray telescope, the low-energy charged particles experiment, the magnetometer, and the plasma waves experiment.

The Golden Record

Each of the Voyagers contain a “message,” prepared by a team headed by Carl Sagan, in the form of a 12-inch (30-centimeter) diameter gold-plated copper disc for potential extraterrestrials who might find the spacecraft. Like the plaques on Pioneers 10 and 11, the record has inscribed symbols to show the location of Earth relative to several pulsars.

The records also contain instructions to play them using a cartridge and a needle, much like a vinyl record player. The audio on the disc includes greetings in 55 languages, 35 sounds from life on Earth (such as whale songs, laughter, etc.), 90 minutes of generally Western music including everything from Mozart and Bach to Chuck Berry and Blind Willie Johnson. It also includes 115 images of life on Earth and recorded greetings from then-U.S. President Jimmy Carter (1924– ) and then-UN Secretary-General Kurt Waldheim (1918–2007).

By January 2024, Voyager 1 was about 136 AU (15 billion miles, or 20 billion kilometers) from Earth, the farthest object created by humans, and moving at a velocity of about 38,000 mph (17.0 kilometers per second) relative to the Sun.

National Space Science Data Center: Voyager 1

A library of technical details and historic perspective.

Beyond Earth: A Chronicle of Deep Space Exploration

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Our Solar System

NASA's Voyager 1 sends readable message to Earth after 4 nail-biting months of gibberish

After four months of being unable to detect comprehensible data from the Voyager 1 spacecraft, NASA scientists have had fresh luck after sending a "poke."

After a nail-biting four months, NASA has finally received a comprehensible signal from its Voyager 1 spacecraft. 

Since November 2023, the almost-50-year-old spacecraft has been experiencing trouble with its onboard computers. Although Voyager 1, one of NASA's longest-lived space missions, has been sending a steady radio signal to Earth, it hasn't contained any usable data , which has perplexed scientists. 

Now, in response to a command prompt, or "poke," sent from Earth on March 1, NASA has received a new signal from Voyager 1 that engineers have been able to decode. Mission scientists hope this information may help them explain the spacecraft's recent communication problems. 

"The source of the issue appears to be with one of three onboard computers, the flight data subsystem (FDS), which is responsible for packaging the science and engineering data before it's sent to Earth by the telemetry modulation unit," NASA said in a blog post Wednesday (March 13) .

Related: NASA's 46-year-old Voyager 1 probe is no longer transmitting data

On March 1, as part of efforts to find a solution to Voyager 1's computer issues, NASA sent a command to the FDS on the spacecraft, instructing it to use different sequences in its software package, which would effectively mean skirting around any data that may be corrupted. 

Voyager 1 is more than 15 billion miles (24 billion kilometers) from Earth. This means any radio signals sent from our planet take 22.5 hours to reach the spacecraft, with any response taking the same time to be picked up by antennas on Earth. 

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On March 3, NASA detected activity from one section of the FDS that differed from the "unreadable data stream" they'd previously been receiving. Four days later, engineers started the heavy task of trying to decode this signal. By March 10, the team discovered that the signal contained a readout of the entire FDS memory. This included the instructions for what the FDS needed to do, any values in its code that can be changed depending on commands from NASA or the spacecraft's status, and downloadable science or engineering data.  

Voyager 1 has ventured farther from Earth than any other human-made object . It was launched in 1977, within weeks of its twin spacecraft , Voyager 2. The initial aim of the mission was to explore Jupiter and Saturn . Yet after almost five decades, and with countless discoveries under their belts, the mission continues beyond the boundaries of the solar system . 

— NASA hears 'heartbeat' signal from Voyager 2 probe a week after losing contact

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NASA scientists will now "compare this readout to the one that came down before the issue arose and look for discrepancies in the code and the variables to potentially find the source of the ongoing issue," they said in the blog post.  

However, NASA stressed that it will take time to determine if any of the insights gained from this new signal can be used to solve Voyager 1's long-standing communication issues. 

Emily is a health news writer based in London, United Kingdom. She holds a bachelor's degree in biology from Durham University and a master's degree in clinical and therapeutic neuroscience from Oxford University. She has worked in science communication, medical writing and as a local news reporter while undertaking journalism training. In 2018, she was named one of MHP Communications' 30 journalists to watch under 30. ( [email protected] ) 

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Voyager 1 Just Sent Its First Coherent Message Back to NASA In Months

A clever programming fix has cured the spacecraft's electronic aphasia.

After 5 months of electronic aphasia, NASA’s Voyager 1 spacecraft can communicate intelligibly again, thanks to a clever programming fix from its engineers.

The Voyager 1 team received a clear message about the spacecraft’s status on April 20, and they expect to have science data flowing again in the next few weeks. This comes a few months after Voyager program manager Suzanne Dodd said restoring the spacecraft’s ability to talk to its operators on Earth would take a miracle.

“In the last decade, I have learned from Voyager that there is (almost) always a way around a problem, no matter how dire it is,” Voyager mission assurance manager Bruce Waggoner told Inverse in March . “You just have to think ‘outside the box’ when people tell you not to do so.”

Voyager 1 entered interstellar space in 2012, and this illustration shows what it might look like out there (although it’s probably a lot darker in reality).

Flipped Bits and Electronic Gibberish

Back in November, a passing cosmic ray hit one of Voyager 1’s three onboard computers, and it “flipped a bit” (or altered a tiny unit of data) in the spacecraft’s Flight Data Subsystem. This unit of data happened to be a key piece of the code that tells Voyager 1 how to package up science and engineering data, including information about its own condition, before sending the message to Earth.

Like the robot version of a person recovering from a stroke, Voyager 1 could receive and understand messages from home, and it could gather data to send back. But when it tried to “speak,” its data came out as a gibberish of random 0s and 1s.

Engineers at NASA realized that to fix the problem, they needed to reprogram Voyager 1 with the correct code. However, there wasn’t enough data storage space on the Flight Data Subsystem computer to hold it all. The programmers had to split the code into sections, which could be tucked into Voyager 1’s computer wherever there was room. Then include instructions about where to find each one.

On April 18, Voyager 1’s team transmitted the new code to the distant spacecraft. Then they waited. It took 22.5 hours for the data, moving at the speed of light, to cross more than 15 billion miles of space to reach Voyager 1, and then it took another 22.5 hours for Voyager 1’s response to cross the vastness of space and reach NASA’s Jet Propulsion Laboratory. But after a tense 45 hours, on April 20, the team downloaded Voyager 1’s message: a clear, understandable status update declaring that all was well with the intrepid space robot.

The Voyager 1 team will spend the next few weeks reworking the code that packages science data, and they expect Voyager 1 to return to sending back reports from the edge of the Solar System — ones its human operators can actually read.

Meanwhile, Voyager 2, a well-behaved space robot that hasn’t been in the news lately, is still cruising out of the Solar System on its own trajectory. NASA says it hopes to keep both missions gathering data and calling home until around 2035 .

• Space Science

Where is Voyager 1 now? Repairs bring space probe back online as journey nears 50 years

After many months of extremely long-distance repairs, NASA’s Voyager 1 space probe is fully operational once again.

“The spacecraft has resumed gathering information about interstellar space,” the agency announced last Thursday, and has resumed its normal operations.

The spacecraft , now travelling through interstellar space more than 15 billion miles from Earth, began sending back corrupted science and engineering data last November.

Over the ensuing months, engineers worked to troubleshoot the problem, a tedious and complicated process given the vast distance between Earth and Voyager 1. Each message took 22.5 hours to transmit, meaning each communication between engineers and the spacecraft was a nearly two day long process.

By April, NASA engineers had traced to root of the problem to a single chip in Voyager 1’s Flight Data System, allowing them to begin rearranging lines of computer code so that the spacecraft could continue transmitting data. Last month, NASA announced that it had restored functionality to two of the spacecraft’s science instruments, followed by the announcement last week that Voyager 1 had been fully restored to normal operations.

Voyager 1: Still traveling 1 million miles per day

Launched in 1977 along with its sister craft Voyager 2, the twin craft are robotic space probes that are now the longest operating spacecraft in history. Their initial mission was to study the outer planets of Jupiter, Saturn, Uranus and Neptune, but they have continued their long journey in the ensuing decades, travelling farther and wider than any other man-made object in history.

In 1990, Voyager 1 transmitted the famous “ Pale Blue Dot ” photograph of Earth, taken when the spacecraft was 3.7 billion miles from the Sun.

By 2012, Voyager 1 became the first spacecraft to enter interstellar space, where they have continued transmit data on plasma waves, magnetic fields and particles in the heliosphere – the outermost region of space directly influenced by the Sun.

As part of their one-way mission, both Voyager spacecraft also carry copies of the “ Golden Records ,” gold plated copper discs containing sounds and images from Earth that were curated by the astronomer Carl Sagan.

Currently travelling roughly one million miles per day, Voyager 1 will continue it journey until at least early next year, when NASA estimates that diminishing power levels may “ prevent further operation .”

June 14, 2024

Voyager 1 Is Back! NASA Spacecraft Safely Resumes All Science Observations

NASA’s venerable Voyager 1 spacecraft has resumed normal science operations with all four functioning instruments for the first time in more than six months

By Meghan Bartels

Artist concept of Voyager 1.

NASA/JPL-Caltech

NASA’s beloved Voyager 1 mission is back to normal science operations for the first time in more than six months, according to agency personnel. The announcement was made after NASA received data from all four of the spacecraft’s remaining science instruments.

The venerable spacecraft launched in 1977 and passed into interstellar space in 2012 , becoming the first human-made object to accomplish that feat. Today Voyager 1 and its twin, Voyager 2, are NASA’s longest-running missions . But the title has been challenging to hold on to for spacecraft that were designed to operate for just four years. The aging probes are stuck in the deep cold of outer space, their nuclear power sources are producing ever less juice, and glitches are becoming increasingly common.

Most recently, Voyager 1 faced a communications issue that began in November 2023. “We’d gone from having a conversation with Voyager, with the 1’s and 0’s containing science data, to just a dial tone,” said Linda Spilker, Voyager project scientist at NASA’s Jet Propulsion Laboratory (JPL), of the spacecraft’s troubles in an interview with Scientific American in March.

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After more than six months of long-distance troubleshooting—Voyager 1 is more than 15 billion miles from Earth, and any signal takes more than 22.5 hours to travel from our planet to the spacecraft—mission personnel have finally coaxed Voyager 1 to gather and send home data with all its remaining science instruments, according to a NASA statement .

The fix required months of analysis to track the issue to a particular chip within the spacecraft’s flight data subsystem. That chip’s code couldn’t be relocated in one fell swoop, however, so mission personnel split the information chip into chunks that could be tucked into stray corners of the rest of the system’s memory. NASA began implementing the new commands in April . And in May the agency directed the aging spacecraft to resume collecting and transmitting science data. Voyager 1’s plasma-wave subsystem and magnetometer bounced back immediately. Its cosmic-ray detector and ow-energy-charged-particles instrument required additional troubleshooting, but both are now finally operating normally, according to NASA.

And although the spacecraft is back to normal operations, the work isn’t quite over. To complete spacecraft recovery from the glitch, mission personnel still need to resynchronize timekeeping software across Voyager 1’s three computers and to maintain the recorder for the spacecraft’s plasma-wave instrument, in addition to completing smaller tasks.

Taken together, Voyager 1’s four remaining instruments offer scientists a precious glimpse of interstellar space. Voyager 1 and 2 are the only two operational spacecraft to cross out of the heliosphere, the bubble of charged particles that marks the influence of the sun across the solar system. This bubble grows and shrinks as the sun passes through its 11-year activity cycle . Inside the heliosphere, space is dominated by particles of the solar wind, while outside of it, cosmic rays reign.

Scientists never dreamed that Voyager 1 would be able to taste these exotic particles. Its primary science targets were Jupiter, Saturn, and the latter planet’s rings and largest moon, Titan—all of which the spacecraft flew past within a few years of its launch. But the mission has survived every challenge to continue trekking through the solar system and into interstellar space, informing scientists about its environment along the way.

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Voyager 1, After Major Malfunction, Is Back From the Brink, NASA Says

The farthest man-made object in space had been feared lost forever after a computer problem in November effectively rendered the 46-year-old probe useless.

By Orlando Mayorquín

Several months after a grave computer problem seemed to spell the end for Voyager 1, which for nearly a half century had provided data on the outer planets and the far reaches of the solar system, NASA announced on Thursday that it had restored the spacecraft to working order.

“The spacecraft has resumed gathering information about interstellar space,” NASA said in its announcement about Voyager 1, the farthest man-made object in space.

Since the problem surfaced in November, engineers had been working to diagnose and resolve the issue, a tedious and lengthy process complicated by the fact that it takes almost two days to send and receive information from Voyager 1, which was the first man-made object ever to enter interstellar space and is currently more than 15 billion miles from Earth.

The space community had been holding its breath since last year as the prospect of fixing the aging probe appeared as dire as ever.

In February, Suzanne Dodd, the Voyager mission project manager, said the problem, which hindered Voyager 1’s ability to send coherent engineering and science data back to Earth, was “the most serious issue” the probe had faced since she began leading the mission in 2010.

Voyager 1 and its twin probe, Voyager 2, were launched in 1977 on a mission to explore the outer planets. NASA capitalized on a rare alignment in the solar system that enabled the probes to visit the four outer planets — Jupiter, Saturn, Uranus and Neptune — by using the gravity of each to swing to the next.

Its planetary mission a success, Voyager 1 continued its journey toward the edge of the solar system, and in 1990 it snapped a fabled photo of the Earth — a tiny speck in an infinite darkness that became known as the “pale blue dot.”

In 2012, the probe became the first to cross into interstellar space and had since, along with its twin, which followed six years later, collected data about the heliosphere, the space around the sun directly under the sun’s influence.

Perhaps as profound as the pale blue dot, each spacecraft is equipped with a golden phonograph record loaded with sound recordings and images showing humanity and life on Earth, begging to one day be discovered by another civilization.

The outlook for recovering Voyager 1 improved substantially in April , when NASA reported that it had managed to get the probe to send back “usable” data about its engineering systems and its health. That was followed by news late last month that the team had restored functionality to two of Voyager 1’s science instruments, allowing it to send back science data and continue its mission.

On Thursday, the agency announced that it had brought the remaining instruments back online and restored Voyager 1 to its normal operations.

Still, Voyager 1’s new lease on life may not last very long. NASA has previously estimated that the nuclear-powered generators on Voyager 1 and Voyager 2 were likely to die around 2025. But Voyager 1 has already demonstrated that it can beat the odds. Ms. Dodd hopes both Voyager spacecraft can reach the mission’s 50th anniversary in 2027.

Orlando Mayorquín is a breaking news reporter, based in New York, and a member of the 2023-24 Times Fellowship class , a program for journalists early in their careers. More about Orlando Mayorquín

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We finally know why NASA's Voyager 1 spacecraft stopped communicating — scientists are working on a fix

The first spacecraft to explore beyond the solar system started spouting gibberish late last year. Now, NASA knows why.

NASA engineers have discovered the cause of a communications breakdown between Earth and the interstellar explorer Voyager 1. It would appear that a small portion of corrupted memory exists in one of the spacecraft's computers. 

The glitch caused Voyager 1 to send unreadable data back to Earth, and is found in the NASA spacecraft's flight data subsystem (FDS). That's the system responsible for packaging the probe's science and engineering data before the telemetry modulation unit (TMU) and radio transmitter send it back to mission control. 

The source of the issue began to reveal itself when Voyager 1 operators sent the spacecraft a "poke" on March 3, 2024. This was intended to prompt FDS to send a full memory readout back to Earth.

The readout confirmed to the NASA team that about 3% of the FDS memory had been corrupted, and that this was preventing the computer from carrying out its normal operations.

Related: NASA finds clue while solving Voyager 1's communication breakdown case

Launched in 1977, Voyager 1 became the first human-made object to leave the solar system and enter interstellar space in 2012. Voyager 2 followed its spacecraft sibling out of the solar system in 2018, and is still operational and communicating well with  Earth.

After 11 years of interstellar exploration, in Nov. 2023, Voyager 1's binary code — the computer language it uses to communicate with Earth — stopped making sense. Its 0's and 1's didn't mean anything anymore.

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"Effectively, the call between the spacecraft and the Earth was still connected, but Voyager's 'voice' was replaced with a monotonous dial tone," Voyager 1's engineering team previously  told Space.com .

The team strongly suspects this glitch is the result of a single chip that's responsible for storing part of the affected portion of the FDS memory ceasing to work.

Currently, however, NASA can’t say for sure what exactly caused that particular issue. The chip could have been struck by a high-speed energetic particle from space or, after 46 years serving Voyager 1, it may simply have worn out.

—  Voyager 2: An iconic spacecraft that's still exploring 45 years on

—  NASA's interstellar Voyager probes get software updates beamed from 12 billion miles away

—  NASA Voyager 2 spacecraft extends its interstellar science mission for 3 more years

Voyager 1 currently sits around 15 billion miles (24 billion kilometers) from Earth, which means it takes 22.5 hours to receive a radio signal from it — and another 22.5 hours for the spacecraft to receive a response via the Deep Space Network's antennas. Solving this communication issue is thus no mean feat.

Yet, NASA scientists and engineers are optimistic they can find a way to help FDS operate normally, even without the unusable memory hardware.

Solving this issue could take weeks or even months, according to NASA — but if it is resolved, Voyager 1 should be able to resume returning science data about what lies outside the solar system.

Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at: [email protected].

Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.’s Open University. Follow him on Twitter @sciencef1rst.

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• jcs Funny timing for this article, when I am streaming an old Star Trek movie. So, surely this didn't cause a 3 byte glitch removing the O, Y and A from Voyager's name buffer? Get it? Reply
• bwana4swahili It is quite amazing it has lasted this long in a space environment. Reply

bwana4swahili said: It is quite amazing it has lasted this long in a space environment.

• HankySpanky So now we know even better for next time. Perhaps a spare chipset that is not redundant but is ready to take over, stored in a protective environment. A task NASA can handle. We'll find out in 100 year or so - if humanity still exists. Reply

HankySpanky said: So now we know even better for next time. Perhaps a spare chipset that is not redundant but is ready to take over, stored in a protective environment. A task NASA can handle. We'll find out in 100 year or so - if humanity still exists.

• Classical Motion I'm afraid it might self repair. And download galactic knowledge, then decide we are a danger. And turn around. Reply

Classical Motion said: I'm afraid it might self repair. And download galactic knowledge, then decide we are a danger. And turn around.

• jcs ROFLOL! And a hot bald chick delivering the bad news! Reply
• View All 8 Comments

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NASA's Voyager 1 spacecraft is talking nonsense. Its friends on Earth are worried

Nell Greenfieldboyce

This artist's impression shows one of the Voyager spacecraft moving through the darkness of space. NASA/JPL-Caltech hide caption

This artist's impression shows one of the Voyager spacecraft moving through the darkness of space.

The last time Stamatios "Tom" Krimigis saw the Voyager 1 space probe in person, it was the summer of 1977, just before it launched from Cape Canaveral, Florida.

Now Voyager 1 is over 15 billion miles away, beyond what many consider to be the edge of the solar system. Yet the on-board instrument Krimigis is in charge of is still going strong.

"I am the most surprised person in the world," says Krimigis — after all, the spacecraft's original mission to Jupiter and Saturn was only supposed to last about four years.

These days, though, he's also feeling another emotion when he thinks of Voyager 1.

"Frankly, I'm very worried," he says.

Ever since mid-November, the Voyager 1 spacecraft has been sending messages back to Earth that don't make any sense. It's as if the aging spacecraft has suffered some kind of stroke that's interfering with its ability to speak.

"It basically stopped talking to us in a coherent manner," says Suzanne Dodd of NASA's Jet Propulsion Laboratory, who has been the project manager for the Voyager interstellar mission since 2010. "It's a serious problem."

Instead of sending messages home in binary code, Voyager 1 is now just sending back alternating 1s and 0s. Dodd's team has tried the usual tricks to reset things — with no luck.

It looks like there's a problem with the onboard computer that takes data and packages it up to send back home. All of this computer technology is primitive compared to, say, the key fob that unlocks your car, says Dodd.

"The button you press to open the door of your car, that has more compute power than the Voyager spacecrafts do," she says. "It's remarkable that they keep flying, and that they've flown for 46-plus years."

Each of the Voyager probes carries an American flag and a copy of a golden record that can play greetings in many languages. NASA/JPL-Caltech hide caption

Each of the Voyager probes carries an American flag and a copy of a golden record that can play greetings in many languages.

Voyager 1 and its twin, Voyager 2, have outlasted many of those who designed and built them. So to try to fix Voyager 1's current woes, the dozen or so people on Dodd's team have had to pore over yellowed documents and old mimeographs.

"They're doing a lot of work to try and get into the heads of the original developers and figure out why they designed something the way they did and what we could possibly try that might give us some answers to what's going wrong with the spacecraft," says Dodd.

She says that they do have a list of possible fixes. As time goes on, they'll likely start sending commands to Voyager 1 that are more bold and risky.

"The things that we will do going forward are probably more challenging in the sense that you can't tell exactly if it's going to execute correctly — or if you're going to maybe do something you didn't want to do, inadvertently," says Dodd.

Linda Spilker , who serves as the Voyager mission's project scientist at NASA's Jet Propulsion Laboratory, says that when she comes to work she sees "all of these circuit diagrams up on the wall with sticky notes attached. And these people are just having a great time trying to troubleshoot, you know, the 60's and 70's technology."

"I'm cautiously optimistic," she says. "There's a lot of creativity there."

Still, this is a painstaking process that could take weeks, or even months. Voyager 1 is so distant, it takes almost a whole day for a signal to travel out there, and then a whole day for its response to return.

"We'll keep trying," says Dodd, "and it won't be quick."

In the meantime, Voyager's 1 discombobulation is a bummer for researchers like Stella Ocker , an astronomer with Caltech and the Carnegie Observatories

"We haven't been getting science data since this anomaly started," says Ocker, "and what that means is that we don't know what the environment that the spacecraft is traveling through looks like."

After 35 Years, Voyager Nears Edge Of Solar System

That interstellar environment isn't just empty darkness, she says. It contains stuff like gas, dust, and cosmic rays. Only the twin Voyager probes are far out enough to sample this cosmic stew.

"The science that I'm really interested in doing is actually only possible with Voyager 1," says Ocker, because Voyager 2 — despite being generally healthy for its advanced age — can't take the particular measurements she needs for her research.

Even if NASA's experts and consultants somehow come up with a miraculous plan that can get Voyager 1 back to normal, its time is running out.

The two Voyager probes are powered by plutonium, but that power system will eventually run out of juice. Mission managers have turned off heaters and taken other measures to conserve power and extend the Voyager probes' lifespan.

"My motto for a long time was 50 years or bust," says Krimigis with a laugh, "but we're sort of approaching that."

In a couple of years, the ebbing power supply will force managers to start turning off science instruments, one by one. The very last instrument might keep going until around 2030 or so.

When the power runs out and the probes are lifeless, Krimigis says both of these legendary space probes will basically become "space junk."

"It pains me to say that," he says. While Krimigis has participated in space missions to every planet, he says the Voyager program has a special place in his heart.

Spilker points out that each spacecraft will keep moving outward, carrying its copy of a golden record that has recorded greetings in many languages, along with the sounds of Earth.

"The science mission will end. But a part of Voyager and a part of us will continue on in the space between the stars," says Spilker, noting that the golden records "may even outlast humanity as we know it."

Krimigis, though, doubts that any alien will ever stumble across a Voyager probe and have a listen.

"Space is empty," he says, "and the probability of Voyager ever running into a planet is probably slim to none."

It will take about 40,000 years for Voyager 1 to approach another star; it will come within 1.7 light years of what NASA calls "an obscure star in the constellation Ursa Minor" — also known as the Little Dipper.

If NASA greenlights this interstellar mission, it could last 100 years

Knowing that the Voyager probes are running out of time, scientists have been drawing up plans for a new mission that, if funded and launched by NASA, would send another probe even farther out into the space between stars.

"If it happens, it would launch in the 2030s," says Ocker, "and it would reach twice as far as Voyager 1 in just 50 years."

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Voyager 1 is back to life in interstellar space, but for how long?

NASA engineers have succeeded in breathing new life into Voyager 1 after the spacecraft, launched in 1977, went silent seven months ago.

NASA engineers have succeeded in breathing new life into Voyager 1 , the spacecraft launched in 1977 and once again communicating after it went silent seven months ago. But now comes another challenge: Keeping Voyager 1 scientifically useful for as long as possible as it probes a realm where no spacecraft has gone before .

Voyager 1 and its twin, Voyager 2 , are treasured at NASA not only because they have sent home astonishing images of the outer planets, but also because in their dotage, they are still doing science that can’t be readily duplicated.

They are now in interstellar space, far beyond the orbits of Neptune and Pluto. Voyager 1 is more than 15 billion miles from Earth and Voyager 2 nearly 13 billion miles. Both have passed the heliopause , where the “solar wind” of particles streaming from the sun terminates.

“They’re going someplace where we have nothing, we have no information,” NASA Deputy Administrator Pam Melroy said. “We don’t know anything about the interstellar medium. Is it a highly charged environment? Are there a lot of dust particles out there?”

Even as the Voyagers continue their journeys, engineers and scientists at the NASA Jet Propulsion Laboratory in Pasadena, Calif. are mourning the loss of Ed Stone, the scientist who guided the mission from 1972 until his retirement in 2022. Stone, a former director of JPL, died June 9 at the age of 88.

“It’s great. This is exploration. This is wonderful,” Stone told The Washington Post in 2013 when he and his colleagues determined that Voyager 1 had reached interstellar space.

Voyager 1 has four scientific instruments still operational in this extended phase of its mission, but it suddenly ceased sending intelligible data on Nov. 14. A “tiger team” of engineers at JPL spent the ensuing months identifying the problem — a malfunctioning computer chip — and restoring communication.

That laborious process is nearly complete. Data is coming from all four instruments, project scientist Linda Spilker said, though engineers are still checking to see whether data from two of the instruments is fully usable.

What no one can change, though, is the mortality of a spacecraft with a limited power supply. Voyager 1 is running on fumes, or, more precisely, on the dwindling power from the radioactive decay of plutonium.

The Voyagers have traveled so far from the sun they can’t rely on solar power and instead use a radioisotope thermoelectric generator. But an RTG doesn’t last forever. Voyager 1 and Voyager 2 will eventually go silent as they continue to cruise the galaxy. NASA scientists and engineers are hoping Voyager 1 can keep sending data until at least Sept. 5, 2027, the 50th anniversary of its launch.

“At some point, we’ll have to start turning off the science instruments one by one,” Spilker said. “Once we’re out of power, then we can no longer keep the spacecraft pointed at the Earth. And so [the Voyagers] will then continue on as what I like to think of as our silent ambassadors.”

In a sense, this is all a bonus because the primary mission for the two Voyagers was the exploration of the outer planets. Both visited Jupiter and Saturn, and Voyager 2 went on to Uranus and Neptune in what was known as the “Grand Tour” of the outer solar system, enabled by a rare orbital arrangement of the planets. The Voyagers delivered spectacular close-up images of the outer planets, and the mission ranks among NASA’s greatest achievements.

The gravitational slingshot from the planetary encounters sent Voyager 1 out of the elliptical plane of the solar system and did the same to Voyager 2 in a different direction.

About four years ago, Voyager 1 encountered something unexpected — a phenomenon scientists have dubbed a pressure front. Jamie Rankin, deputy project scientist, said the instruments on the spacecraft picked up a sudden change in the magnetic field of the interstellar environment, as well as a sudden increase in the density of particles.

What exactly caused this change remains unknown. But NASA scientists are eager to get all the data flowing normally again to see whether the pressure front is still detectable.

“Is the pressure front still there; what is happening with it?” Melroy said.

Voyager 1 is heading toward the constellation Ophiuchus, according to NASA, and in about 38,000 years, it will come within 1.7 light-years of an unremarkable star near the Little Dipper. But although it will have long gone silent, it does carry the equivalent of a message in a bottle: the “Golden Record.”

The record was curated by a committee led by astronomer Carl Sagan and includes greetings in 55 languages, sounds of surf, wind and thunderstorms, a whale song and music ranging from Beethoven to Chuck Berry to a Navajo chant. The Golden Record is accompanied by instructions for playing it, should the spacecraft someday come into the hands of an intelligent species interested in finding out about life on Earth.

“The spacecraft will be encountered and the record played only if there are advanced spacefaring civilizations in interstellar space,” Sagan said.

But that advanced spacefaring civilization might not be an alien one, NASA scientists point out. It’s conceivable that the cosmic message in a bottle could be picked up someday by a human deep-space mission eager to examine a vintage spaceship.

NASA’s Voyager 1 Is Glitching, Sending Nonsense From Interstellar Space

The aging spacecraft, launched in 1977, is transmitting a gibberish pattern of ones and zeros back to Earth

Margaret Osborne

Daily Correspondent

NASA’s Voyager 1 probe is experiencing a glitch that’s causing it to send a repeating, gibberish pattern of ones and zeroes back to Earth, the agency announced this week. The spacecraft is still able to receive and execute commands sent to it, but it’s unable to transmit back science or engineering data. 

After ruling out other possibilities, the Voyager team determined the spacecraft’s issues stem from one of its three computers, called the flight data system (FDS). Last weekend, engineers tried to restart the FDS to see whether they could resolve the problem, but the probe still isn’t returning usable data, according to NASA. 

Launched in 1977, Voyager 1 and its twin spacecraft Voyager 2 are NASA’s longest-operating mission. They are the only probes to ever explore interstellar space , or the vast area between stars. The spacecraft were initially launched to study Jupiter and Saturn, and they were only intended to last five years . But after making a series of discoveries—including spotting active volcanoes on Jupiter’s moon Io—NASA extended their mission. Both spacecraft carry a “ golden record ,” a 12-inch, gold-plated, copper disk that contains sounds and images to represent humankind in case any extraterrestrials ever encounter them.

My twin Voyager 1 is having a bit of trouble with its Flight Data System, but our team is on it! Details from @NASAJPL below. -V2 https://t.co/DRnxCzYLv5 — NASA Voyager (@NASAVoyager) December 12, 2023

By today’s standards, the technology aboard the Voyager crafts is ancient. Their computers only have 69.63 kilobytes of memory —about enough to store an average jpeg file. To make room for new observations, they must erase data after sending it to Earth.

“The Voyager computers have less memory than the key fob that opens your car door,” Linda Spilker , a planetary scientist who started working on the Voyager missions in 1977, told Scientific American ’s Tim Folger last year.

But the simple, yet hardy design of the Voyagers has contributed to their longevity and allowed them to hop between missions to collect valuable data. Still, both aging spacecraft have experienced glitches. Over the summer, a human error caused Voyager 2’s antenna to tilt two degrees away from Earth , leading researchers to lose contact with the craft for more than a week before its functions returned to normal. In 2022, an issue in the attitude articulation and control system (AACS) of Voyager 1 caused it to send “garbled information about its health and activities to mission controllers, despite operating normally,” per NASA . Engineers were eventually able to solve the glitch. 

Right now, Voyager 1 is hurtling through space about 15 billion miles from Earth and Voyager 2 is more than 12.6 billion miles away. Because the spacecraft are so distant, commands from mission controllers take 22.5 hours to reach Voyager 1. This means it takes 45 hours to determine whether a command to the spacecraft has had the intended outcome. NASA says it could take several weeks to develop a new plan to fix the current FDS problem. 

“Finding solutions to challenges the probes encounter often entails consulting original, decades-old documents written by engineers who didn’t anticipate the issues that are arising today,” NASA says in its statement. “As a result, it takes time for the team to understand how a new command will affect the spacecraft’s operations in order to avoid unintended consequences.” 

Calla Cofield, a media relations specialist at NASA’s Jet Propulsion Laboratory, which manages the mission, tells CNN ’s Ashley Strickland engineers are now working to find the underlying cause of the problem before figuring out next steps. 

“The Voyagers are performing far, far past their prime missions and longer than any other spacecraft in history,” Cofield tells the publication. “So, while the engineering team is working hard to keep them alive, we also fully expect issues to arise.”

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Margaret Osborne | | READ MORE

Margaret Osborne is a freelance journalist based in the southwestern U.S. Her work has appeared in the  Sag Harbor Express  and has aired on  WSHU Public Radio.

We're inviting NASA to transmit a final message from humanity to the Voyager 1 & 2 spacecraft

We'd like you and your friends to contribute a suggestion of what it should say.

Your message to the Voyager spacecraft

If you could send such a message about humanity, to be read by an alien civilisation hundreds of millions of years from now, then what would you say?

The Voyagers are a long way from home right now and talking to them, even through NASA's deep space communications network, is quite slow. So you need to keep your message pretty short; just 1000 characters, (about the length of seven tweets) - see the FAQs for more information .

Here's our suggested message:

Over 40 years after leaving Earth this spacecraft named Voyager had broken into interstellar space, 20 billion kilometers from its home planet, & was still powered & collecting useful data. During this time our society had changed significantly, its population doubling to over 7 billion, & the challenges of living sustainably & peacefully together had grown more urgent. Our technologies had also become increasingly digital, raising our computing capability, pushing the frontiers of our knowledge faster & accelerating our development as a single, interconnected global civilization; with all the advantages and problems that this brings. With onboard power dwindling, the uploading of this message is one of the last contacts we will have with this spacecraft. We hope that one day, in finding our Voyager, you will know of our existence & our desire, like yours, to explore & better understand this Universe we have shared with you. With peace & hope from the people of planet Earth. Dec 2023

Why just 1000 characters. Can't Voyager store more information on board than that?

Will anyone really ever be able to read such a message, how long do we have to send such a message before the voyagers run out of power and can't receive our signals from earth any more, how long will such a message survive in the memories of voyager's dead computers, why bother sending it if it's so unlikely to survive or ever be read, will nasa definitely send a final message to the voyagers, what will happen to any message i suggest here, the voyager timeline, february 1998, august 2012, the voyager programme.

• The twin Voyager spacecraft left Earth in 1977, on trajectories which would take them eventually right out of the Solar System and into the galaxy beyond.
• In this benign environment of interstellar space they will last a very very long time - perhaps a billion years. They will probably outlive the human race and they might even survive beyond the lifespan of the Earth itself.
• With this in mind a team of big thinkers lead by the cosmologist Carl Sagan included a Golden Record bolted to the side of each spacecraft. On these records are encoded photographs of Earth - and human society, greetings in many languages and music - 27 tracks spanning centuries of music making, across the world through much of human history.
• Almost 40 years after they left Earth both spacecraft are still doing well and we are in regular radio contact with them. Their computer memories, although small by today's standards, are big enough to store a short, 1000 character text based message from us. And there's still enough electrical power onboard, for the next 8 years or so, to receive and save such a message.
• We'd like to try and persuade the great folks at NASA, who are still in contact with the Voyagers, to send such a message; and using this Facebook page and app we wanted to give you a chance to suggest what it could say.

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NASA’s Voyager 1, the most distant spacecraft from Earth, is doing science again after problem

FILE - This illustration provided by NASA depicts Voyager 1. The most distant spacecraft from Earth stopped sending back understandable data in November 2023. The Jet Propulsion Laboratory in Southern California announced this week that Voyager 1’s four scientific instruments are back in business after a technical snafu in November. (NASA via AP, File)

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DALLAS (AP) — NASA’s Voyager 1, the most distant spacecraft from Earth, is sending science data again.

Voyager 1’s four instruments are back in business after a computer problem in November, the Jet Propulsion Laboratory said this week. The team first received meaningful information again from Voyager 1 in April, and recently commanded it to start studying its environment again.

Launched in 1977, Voyager 1 is drifting through interstellar space, or the space between star systems. Before reaching this region, the spacecraft discovered a thin ring around Jupiter and several of Saturn’s moons. Its instruments are designed to collect information about plasma waves, magnetic fields and particles.

Voyager 1 is over 15 billion miles (24.14 billion kilometers) from Earth. Its twin Voyager 2 — also in interstellar space — is more than 12 billion miles (19.31 billion kilometers) away.

This story was first published on June 14, 2024. It was updated on June 17, 2024 to correct the metric distance Voyager 1 and Voyager 2 spacecraft are from Earth.

The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and Educational Media Group. The AP is solely responsible for all content.

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• Where Are They Now
• Frequently Asked Questions
• Q & A with Ed Stone

golden record

Where are they now.

• frequently asked questions
• Q&A with Ed Stone

NASA Beamed Your #MessageToVoyager

On Sept. 5, 2017 — the 40th anniversary of Voyager 1’s launch — NASA revealed the winning #MessageToVoyager and beamed it into space. "Message to Voyager" is a social media campaign inspired by the messages of goodwill carried on the Golden Record aboard each Voyager spacecraft. This clip reveals the winning message: "We offer friendship across the stars. You are not alone." It was submitted by Oliver Jenkins and announced on NASA Television.

As part of the celebration of Voyager’s 40 years of continuing exploration, NASA invited the public to submit short, uplifting messages to the Voyager 1 spacecraft and all that lies beyond it. These messages were a maximum of 60 characters and were tagged #MessageToVoyager. NASA tracked more than 30,000 submissions. The Voyager team together with JPL and NASA headquarters selected their 10 favorites, which were then put to a public vote. The winning message was sent into interstellar space by a command that originated from the Deep Space Network (DSN) mission control at NASA's Jet Propulsion Laboratory with help from the original Captain Kirk, actor William Shatner; Tracy Drain, Juno mission deputy chief engineer; Jeff Berner, DSN chief engineer; and Annabel Kennedy, DSN command engineer.

The winning message was chosen by public vote from among these finalists:

• Messages could have a maximum of 60 characters (A-Z, 0-9, spaces and punctuation)
• Submissions were tagged #MessageToVoyager
• Messages were posted to Twitter, Instagram, Facebook, Google+ or Tumblr
• Privacy settings on submission posts must have been public to be considered
• Submissions were received by 11:59 p.m. PDT on Aug. 15, 2017
• JPL, NASA and the Voyager team selected their top picks
• The public will choose the winning message by poll on this page from these top picks
• NASA will beam the winning message through space toward Voyager 1
• Voyager is the longest continuously operating space mission ever
• Voyager 1 is the most distant human-made object ever
• Voyager 1 is the first spacecraft to enter interstellar space
• Voyager 2 is the only spacecraft to fly by Jupiter, Saturn, Uranus and Neptune
• Both are the first spacecraft able to detect their own problems and take corrective action
• More about how the Voyagers blazed trails

#MessageToVoyager Social Media Campaign Timeline

NASA's Voyager 1 is sending mysterious data from beyond our solar system. Scientists are unsure what it means.

• NASA said Voyager 1 is sending data that doesn't match the spacecraft's movements.
• The veteran spacecraft has been exploring our solar system and interstellar space since 1977.
• It is now 14.5 billion miles away from Earth, making it the most distant human-made object.

NASA's Voyager 1 is continuing its journey beyond our solar system, 45 years after it was launched. But now the veteran spacecraft is sending back strange data, puzzling its engineers.

NASA said on Wednesday that while the probe is still operating properly, readouts from its attitude articulation and control system — AACS for short — don't seem to match the spacecraft's movements and orientation, suggesting the craft is confused about its location in space. The AACS is essential for Voyager to send NASA data about its surrounding interstellar environment as it keeps the craft's antenna pointing right at our planet.

"A mystery like this is sort of par for the course at this stage of the Voyager mission," Suzanne Dodd, a project manager for Voyager 1 and 2 at NASA's Jet Propulsion Laboratory, said in a statement . "The spacecraft are both almost 45 years old, which is far beyond what the mission planners anticipated." NASA said Voyager 1's twin, the Voyager 2 probe, is behaving normally.

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Launched in 1977 to explore the outer planets in our solar system, Voyager 1 has remained operational long past expectations and continues to send information about its journeys back to Earth. The trailblazing craft left our solar system and entered interstellar space in 2012 . It is now 14.5 billion miles away from Earth, making it the most distant human-made object.

NASA said that from what its engineers can tell, Voyager 1's AACS is sending randomly generated data that does not "reflect what's actually happening onboard." But even if system data suggests otherwise, the spacecraft's antenna seems to be properly aligned — it is receiving and executing commands from NASA and sending data back to Earth. It said that so far the system issue hasn't triggered the aging spacecraft to go into "safe mode," during which it carries out only essential operations.

"Until the nature of the issue is better understood, the team cannot anticipate whether this might affect how long the spacecraft can collect and transmit science data," NASA said.

Dodd and her team hope to figure out what's prompting the robot emissary from Earth to send junky data. "There are some big challenges for the engineering team," Dodd said. A major one: It takes light 20 hours and 33 minutes to get to Voyager's current interstellar location, so a round-trip message between the space agency and Voyager takes two days.

"But I think if there's a way to solve this issue with the AACS, our team will find it," Dodd added.

Watch: NASA is flying a $1.5 billion spacecraft into the sun — here's why

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8 MINUTES AGO: Voyager 1 Just Sent Out A TERRIFYING Message From Space

We’re never going to stop exploring the unknown in air and space.

Voyager, in some very real sense, is material that’s not from the medium in which it finds itself.

I was hearing the first of the two Voyager spacecraft to extend man set this farther into the solar system than ever before.

The Earth may be a massive and beautiful place, but in comparison to the rest of the universe it is a mere speck.

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Ever since human technology made it possible to launch rockets and satellites into space, people have had an insatiable desire to learn more and more about the mysteries of the universe.

How do we go about it?

Well, with the Voyages delivering us information to process and, well, it’s just sent us a dreadful warning and it’s about to change everything.

Join us as we analyze all that the Voyager has discovered up to this point, along with the terrifying message and what it might mean for the future.

For almost 45 years, the Voyager missions have been an integral part of space exploration, providing some of the very first and most significant glances into the true state of our solar system.

Yet these missions were never intended to survive this long.

When the first plans for the probe were carried out, the idea to send out probes in the 1970s was created out of sheer accident when Michael Minovich realized that a spacecraft could piggyback on the velocity of a planet and catapult further out into the solar system.

According to NASA officials, the Voyager mission was planned to last five years when it was first launched.

However, both Voyager 1 and Voyager 2 are still on the move, gathering crucial scientific data from the deepest reaches of space.

In the summer of 1977, the two spacecraft launched within weeks of each other.

Voyager 1 and Voyager 2 were designed to explore Jupiter and Saturn.

Both spacecraft successfully carried out studies of those planets.

Later, Voyager 2 completed the first ever close observations of Uranus in 1986 and Neptune in 1989.

The flyby trips involving the four planets became known as the Voyager Grand Tour.

After that, the two spacecraft embarked on a new mission to explore distant reaches of space.

NASA revealed in 2013 that Voyager 1 had crossed the boundary separating our solar system from Interstellar space.

The term Interstellar means between Stars.

According to scientists, Interstellar space begins where the sun’s continual flow of particles and magnetic fields cease.

According to NASA, Voyager 2 eventually entered Interstellar space in 2018.

At the moment, the spacecraft was 17.7 billion kilometers from the sun.

So far, the Voyages are the only spacecraft that have explored Interstellar space.

The two explorers investigated how the Interstellar medium interacts with solar wind, the sun’s continual flow of charged particles.

They have also supplied information about the heliosphere, which is a protective bubble that surrounds our solar system.

The solar wind creates the heliosphere, which is molded and changed by Interstellar circumstances.

The actual border of the solar system, the place where solar wind ends and Interstellar space begins, is called the heliopause.

According to NASA, the Voyager spacecraft has supplied fresh knowledge about Interstellar space.

They discovered, for example, that cosmic rays are approximately three times more intense beyond the heliopause than deep within the heliosphere.

Scientists merged Voyager findings with data from subsequent missions to obtain a more complete picture of our sun and how the heliosphere interacts with Interstellar space.

As per NASA, last year scientists announced that Voyager 1 had recorded a humming noise that was linked to waves identified in minuscule amounts of gas found in the near emptiness of Interstellar space.

Nicola Fox, the director of NASA’s heliophysics division in Washington DC, stated in a statement that the Voyager’s missions had supplied significant information about the sun and the sun’s influence throughout the solar system over the past four decades.

Experts are still puzzled as to how voyages can continue to operate in temperatures well below what they were built for.

Scientists have also detected something weird going on in the Solar System’s outskirts.

The heliopause, which is the barrier between the heliosphere and the Interstellar medium, appears to be rippling and creating oblique angles in an unexpected way.

The general concept that the heliopause changes shape is not new.

Over the past decade, researchers have determined that it is not static.

They made this discovery using data from the only two spacecraft to leave the heliosphere thus far, Voyager 1 and Voyager 2, as well as NASA’s Interstellar Boundary Explorer (IBEX) satellite, which studies the emissions of energetic neutral atoms (ENAs) produced when solar winds and the Interstellar medium interact.

The Voyager spacecraft provide the only direct, in-situ measurements of the locations of these boundaries, but only at one point in space and time.

Eric Zernstein, a space physicist at Princeton University, wrote in an email to Vice, ‘IBEX helps round out that data.

Scientists have used the data to develop models that forecast how the heliopause will change in the future.

In a nutshell, solar winds and the Interstellar medium push and pull on each other to form a constantly shifting boundary.

However, recent heliopause research has revealed data that contradicts prior findings.

IBEX documented the brightening of ENAs that suggested asymmetries in the heliopause over a period of many months in 2014, and the scientists later found such asymmetries were incongruent with the model’s, Vice reported.

Furthermore, scientists observed that the heliopause shifted substantially in a relatively short amount of time after studying data from Voyager 1 and Voyager 2.

That explains why there was such a significant gap between the two probes’ entries into Interstellar space in 2012 and 2018, respectively.

However, the heliopause’s movement also contradicts the theories.

The researchers called these disparities ‘entry-speaking,’ and potentially controversial in an article published October 10 in the journal Nature Astronomy.

They intend to continue investigating the heliopause in the hopes of gaining more information from NASA’s Interstellar Mapping and Acceleration Probe (IMAP), a new and improved satellite that can detect ENAs and is set to debut in 2025.

According to Zernstein, ‘we can only speculate on this odd occurrence occurring in the ghostly depths of the solar system till then.

‘ In the middle of May, the Voyager 1 on-board system that is responsible for keeping its High Gain antenna pointed at Earth and is known as the Attitude Articulation and Control System (AACS) started beaming home confusing jumbles of data, rather than typical reports about the spacecraft’s health and status.

From our vantage point, it seemed as though the spacecraft had developed a condition similar to an electronic aphasia, a condition that results in the impairment of one’s ability to speak fluently.

It’s possible that the data were generated at random, or that they don’t reflect any probable state at all.

According to NASA’s explanation in a statement from the time, the AACS could be in even more perplexing for the engineers was the fact that despite the strange status updates from the spacecraft, Voyager 1 looked to be in excellent condition.

The radio signal coming from the ship is still strong and consistent, which indicates that the antenna is still aimed at Earth and is not in the configuration that the AACS claimed it wasn’t.

To NASA, similarly, the science systems on Voyager 1 continued to collect and transmit data as usual, despite the fact that the AACS was experiencing the same strangeness.

Furthermore, whatever was wrong with the AACS did not trigger a fault protection system that is designed to put the spacecraft into safe mode whenever there is a glitch.

Fortunately, NASA engineers identified the problem and were able to implement a solution.

It was discovered that the AACS had begun delivering its telemetry data through an onboard computer that had stopped functioning many years earlier.

All NASA engineers had to do was issue the command to the AACS to utilize the right computer to send its data home, because the dead computer damaged all of the outgoing data.

The next challenge will be determining what prompted the AACS to swap systems in the first place.

According to NASA, the system most likely received an incorrect command from another onboard computer.

While they claim it is not a serious concern for Voyager 1’s well-being at the moment, the underlying culprit must be located and rectified to prevent future strangeness.

Voyager 1 has spent the last decade drifting in Interstellar space beyond the reach of our Sun’s magnetic field.

The field shielded the craft from cosmic rays and other Interstellar radiation, in the same way that Earth’s magnetic fields shield us from high energy particles and radiation from the Sun.

When one of those high-speed energetic particles strikes a computer chip, it can cause minor memory errors that mount up over time, and it’s realistic to expect that to be a concern for Voyager 1’s on-board computers as well.

A mystery like this is sort of par for the course at this stage of the Voyager mission,” said Susan Dodd, project manager for Voyager 1 and 2, in a statement.

“Both spacecraft are about 45 years old, which is much beyond what the mission plan is expected.

We are also in Interstellar space, which has a high radiation environment that no spacecraft has ever flown in before.

The journeys that these spacecraft have taken up to this point have been remarkable.

Let’s hear your thoughts about Voyager 1 in the comments down below.

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