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NASA's Voyager 1 spacecraft finally phones home after 5 months of no contact

On Saturday, April 5, Voyager 1 finally "phoned home" and updated its NASA operating team about its health.

NASA's interstellar explorer Voyager 1 is finally communicating with ground control in an understandable way again. On Saturday (April 20), Voyager 1 updated ground control about its health status for the first time in 5 months. While the Voyager 1 spacecraft still isn't sending valid science data back to Earth, it is now returning usable information about the health and operating status of its onboard engineering systems. 

Thirty-five years after its launch in 1977, Voyager 1 became the first human-made object to leave the solar system and enter interstellar space . It was followed out of our cosmic quarters by its space-faring sibling, Voyager 2 , six years later in 2018. Voyager 2, thankfully, is still operational and communicating well with Earth. 

The two spacecraft remain the only human-made objects exploring space beyond the influence of the sun. However, on Nov. 14, 2023, after 11 years of exploring interstellar space and while sitting a staggering 15 billion miles (24 billion kilometers) from Earth, Voyager 1's binary code — computer language composed of 0s and 1s that it uses to communicate with its flight team at NASA — stopped making sense.

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

In March, NASA's Voyager 1 operating team sent a digital "poke" to the spacecraft, prompting its flight data subsystem (FDS) to send a full memory readout back home.

This memory dump revealed to scientists and engineers that the "glitch" is the result of a corrupted code contained on a single chip representing around 3% of the FDS memory. The loss of this code rendered Voyager 1's science and engineering data unusable.

The NASA team can't physically repair or replace this chip, of course, but what they can do is remotely place the affected code elsewhere in the FDS memory. Though no single section of the memory is large enough to hold this code entirely, the team can slice it into sections and store these chunks separately. To do this, they will also have to adjust the relevant storage sections to ensure the addition of this corrupted code won't cause those areas to stop operating individually, or working together as a whole. In addition to this, NASA staff will also have to ensure any references to the corrupted code's location are updated.

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On April 18, 2024, the team began sending the code to its new location in the FDS memory. This was a painstaking process, as a radio signal takes 22.5 hours to traverse the distance between Earth and Voyager 1, and it then takes another 22.5 hours to get a signal back from the craft. 

By Saturday (April 20), however, the team confirmed their modification had worked. For the first time in five months, the scientists were able to communicate with Voyager 1 and check its health. Over the next few weeks, the team will work on adjusting the rest of the FDS software and aim to recover the regions of the system that are responsible for packaging and returning vital science data from beyond the limits of 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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• Robb62 'V'ger must contact the creator. Reply
• Holy HannaH! Couldn't help but think that "repair" sounded extremely similar to the mechanics of DNA and the evolution of life. Reply
• Torbjorn Larsson *Applause* indeed, thanks to the Voyager teams for the hard work! Reply
• SpaceSpinner I notice that the article says that it has been in space for 35 years. Either I have gone back in time 10 years, or their AI is off by 10 years. V-*ger has been captured! Reply

Admin said: On Saturday, April 5, Voyager 1 finally "phoned home" and updated its NASA operating team about its health. The interstellar explorer is back in touch after five months of sending back nonsense data. NASA's Voyager 1 spacecraft finally phones home after 5 months of no contact : Read more

evw said: I'm incredibly grateful for the persistence and dedication of the Voyagers' teams and for the amazing accomplishments that have kept these two spacecrafts operational so many years beyond their expected lifetimes. V-1 was launched when I was 25 years young; I was nearly delirious with joy. Exploring the physical universe captivated my attention while I was in elementary school and has kept me mesmerized since. I'm very emotional writing this note, thinking about what amounts to a miracle of technology and longevity in my eyes. BRAVO!!! THANK YOU EVERYONE PAST & PRESENT!!!

• EBairead I presume it's Fortran. Well done all. Reply

SpaceSpinner said: I notice that the article says that it has been in space for 35 years. Either I have gone back in time 10 years, or their AI is off by 10 years. V-*ger has been captured!

EBairead said: I presume it's Fortran. Well done all.

• View All 13 Comments

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Q4 results today: DMart, Kotak Mahindra, IDBI Bank to Zen Tech — 18 companies to declare Q4 results 2024 on May 4

Q4 results today: dmart, jammu & kashmir bank ltd, zen technologies, central depository services (india) ltd (cdsl), kotak mahindra bank, and idbi bank are set to announce their quarterly earnings for q4fy24 on may 4.

Q4 results today: DMart, Jammu & Kashmir Bank Ltd, Zen Technologies Ltd, Central Depository Services (India) Limited (CDSL), Kotak Mahindra and IDBI Bank are among over 16 companies that will post their earnings for the quarter that ended on March 31, 2024 (January-March) on May 4.

During the Friday trading session (May 3), the Indian benchmark indices closed lower, with the Nifty finishing below 22,500 due to widespread selling across all sectors except metals. The Sensex dropped by 732.96 points, or 0.98 per cent, closing at 73,878.15, while the Nifty declined by 172.40 points, or 0.76 per cent, to end at 22,475.80. Investors' wealth eroded by ₹ 2.25 lakh crore on Friday, the day when the BSE Sensex tanked 733 points, amid profit-taking and worries over premium valuations of local stocks.

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Contact restored with NASA’s Voyager 1 space probe

Contact restored.

That was the message relieved NASA officials shared after the agency regained full contact with the Voyager 1 space probe, the most distant human-made object in the universe, scientists have announced.

For the first time since November, the spacecraft is returning usable data about the health and status of its onboard engineering systems, NASA said in a news release Monday.

The 46-year-old pioneering probe, now 15.1 billion miles from Earth, has continually defied expectations for its life span as it ventures farther into the  uncharted territory of the cosmos .

More: Voyager 1 is 15 billion miles from home and broken. Here's how NASA is trying to fix it.

Computer experts to the rescue

It wasn't as easy as hitting Control-Alt-Delete, but top experts at NASA and CalTech were able to fix the balky, ancient computer on board the probe that was causing the communication breakdown – at least for now.

A computer problem aboard Voyager 1 on Nov. 14, 2023, corrupted the stream of science and engineering data the craft sent to Earth,  making it unreadable .

Although the radio signal from the spacecraft had never ceased its connection to ground control operators on Earth, that signal had not carried any usable data since November, NASA said. After some serious sleuthing to fix the onboard computer, that changed on April 20, when NASA finally received usable data.

In interstellar space

The probe and its twin, Voyager 2, are the only spacecraft to ever fly in interstellar space (the space between the stars).

Voyager 2 continues to operate normally, NASA reports. Launched  more than 46 years ago , the twin spacecraft are standouts on two fronts: they've operated the longest and traveled the farthest of any spacecraft ever.

Before the start of their interstellar exploration, both probes flew by Saturn and Jupiter, and Voyager 2 flew by Uranus and Neptune.

More: NASA gave Voyager 1 a 'poke' amid communication woes. Here's why the response was encouraging.

They were  designed to last five years but have become the longest-operating spacecraft in history. Both carry  gold-plated copper discs  containing sounds and images from Earth, content that was chosen by a team headed by celebrity astronomer  Carl Sagan .

For perspective, it was the summer of 1977 when the Voyager probes left Earth. "Star Wars" was No. 1 at the box office, Jimmy Carter was in the first year of his presidency, and Elvis Presley had just died.

Contributing: Eric Lagatta and George Petras

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Moscow metro launched a new secure Wi-Fi network

MaximaTelecom launched a closed network in the Moscow metro , which will be free for users who agree to watch ads. Most likely, the company, operating in the metro for seven years, decided to do it after the scandal with the data leak.

It should be noted that MaximaTelecom is the Russian telecommunication company engaged in the development and commercialization of public wireless networks since 2004; the operator of Europe's largest public Wi-Fi network.

The company MaximaTelecom begins open testing of the closed Wi-Fi network in the Metropolitan using Hotspot 2.0 technology. Since January 2019, testing of this network was available only to employees of the company.

According to Boris Volpe, MaximTelecom CEO, Wi-Fi in the Moscow metro will become the largest secure public network in Europe after the introduction of Hotspot 2.0 technologies. Open technology testing will take three months.

According to a company representative, this network has protection against automatic connection to phishing points. In addition, the Hotspot 2.0 technology includes radio encryption. Thus, the user is protected from traffic interception between the access point and the client device.

It is interesting to note that the launch of the new network could be a delayed reaction of the company to the scandal with the leak of user data. Recall that in April programmer Vladimir Serov reported a major vulnerability in Wi-Fi of MaximaTelecom. According to him, it allowed attackers to obtain phone numbers of all connected passengers, as well as unencrypted data about users, such as phone number, gender, age.

MaximaTelecom recognized the existence of the vulnerability and reported that it was promptly closed turning off the option to store data on the movement of users between stations. Roskomnadzor sent a request to find out details, but violations of the rights of users were not recorded.

“With the development of LTE services by mobile operators, the need for Wi-Fi services in the subway, encrypted or not, is reduced,” commented MForum expert Alexei Boyko.

Earlier E Hacking News reported that it was found out that Tele2 is monitoring subscribers using a dangerous script. The company gets access to the data due to the mass implementation of scripts via CDN.

Las Vegas and NTT deploy largest private 5G network in US

Intel accelerating the next era of wireless with Wi-Fi 7

Next Generation of Wi-Fi 6E coming to Apple enterprise

Face payments introduced in Moscow metro in 2021

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Russia establishes special site to fabricate fuel for China’s CFR-600

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A special production site to fabricate fuel for China’s CFR-600 fast reactor under construction has been established at Russia’s Mashinostroitelny Zavod (MSZ - Machine-Building Plant) in Elektrostal (Moscow region), part of Rosatom’s TVEL Fuel Company. 

As part of the project, MSZ had upgraded existing facilities fo the production of fuel for fast reactors, TVEL said on 3 March. Unique equipment has been created and installed, and dummy CFR-600 fuel assemblies have already been manufactured for testing.

The new production site was set up to service an export contract between TVEL and the Chinese company CNLY (part of China National Nuclear Corporation - CNNC) for the supply of uranium fuel for CFR-600 reactors. Construction of the first CFR-600 unit started in Xiapu County, in China's Fujian province in late 2017 followed by the second unit in December 2020. The contract is for the start-up fuel load, as well as refuelling for the first seven years. The start of deliveries is scheduled for 2023.

“The Russian nuclear industry has a unique 40 years of experience in operating fast reactors, as well as in the production of fuel for such facilities,” said TVEL President Natalya Nikipelova. “The Fuel Division of Rosatom is fulfilling its obligations within the framework of Russian-Chinese cooperation in the development of fast reactor technologies. These are unique projects when foreign design fuel is produced in Russia. Since 2010, the first Chinese fast neutron reactor CEFR has been operating on fuel manufactured at the Machine-Building Plant, and for the supply of CFR-600 fuel, a team of specialists from MSZ and TVEL has successfully completed a complex high-tech project to modernise production,” she explained.

A special feature of the new section is its versatility: this equipment will be used to produce fuel intended for both the Chinese CFR-600 and CEFR reactors and the Russian BN-600 reactor of the Beloyarsk NPP. In the near future, the production of standard products for the BN-600 will begin.

The contract for the supply of fuel for the CFR-600 was signed in December 2018 as part of a governmental agreement between Russia and China on cooperation in the construction and operation of a demonstration fast neutron reactor in China. This is part of a wider comprehensive programme of cooperation in the nuclear energy sector over the coming decades. This includes serial construction of the latest Russian NPP power units with generation 3+ VVER-1200 reactors at two sites in China (Tianwan and Xudabao NPPs). A package of intergovernmental documents and framework contracts for these projects was signed in 2018 during a meeting between Russian President Vladimir Putin and Chinese President Xi Jinping.

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The Eco Engine

Victor Mukhin

• Scientific Program

Title : Active carbons as nanoporous materials for solving of environmental problems

However, up to now, the main carriers of catalytic additives have been mineral sorbents: silica gels, alumogels. This is obviously due to the fact that they consist of pure homogeneous components SiO2 and Al2O3, respectively. It is generally known that impurities, especially the ash elements, are catalytic poisons that reduce the effectiveness of the catalyst. Therefore, carbon sorbents with 5-15% by weight of ash elements in their composition are not used in the above mentioned technologies. However, in such an important field as a gas-mask technique, carbon sorbents (active carbons) are carriers of catalytic additives, providing effective protection of a person against any types of potent poisonous substances (PPS). In ESPE “JSC "Neorganika" there has been developed the technology of unique ashless spherical carbon carrier-catalysts by the method of liquid forming of furfural copolymers with subsequent gas-vapor activation, brand PAC. Active carbons PAC have 100% qualitative characteristics of the three main properties of carbon sorbents: strength - 100%, the proportion of sorbing pores in the pore space – 100%, purity - 100% (ash content is close to zero). A particularly outstanding feature of active PAC carbons is their uniquely high mechanical compressive strength of 740 ± 40 MPa, which is 3-7 times larger than that of  such materials as granite, quartzite, electric coal, and is comparable to the value for cast iron - 400-1000 MPa. This allows the PAC to operate under severe conditions in moving and fluidized beds.  Obviously, it is time to actively develop catalysts based on PAC sorbents for oil refining, petrochemicals, gas processing and various technologies of organic synthesis.

Victor M. Mukhin was born in 1946 in the town of Orsk, Russia. In 1970 he graduated the Technological Institute in Leningrad. Victor M. Mukhin was directed to work to the scientific-industrial organization "Neorganika" (Elektrostal, Moscow region) where he is working during 47 years, at present as the head of the laboratory of carbon sorbents.     Victor M. Mukhin defended a Ph. D. thesis and a doctoral thesis at the Mendeleev University of Chemical Technology of Russia (in 1979 and 1997 accordingly). Professor of Mendeleev University of Chemical Technology of Russia. Scientific interests: production, investigation and application of active carbons, technological and ecological carbon-adsorptive processes, environmental protection, production of ecologically clean food.   

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