kepler voyage

Type de voyage

Destination

Ville de départ

Nos plus belles destinations

Circuit Douceur Tunisie

Un circuit équilibré qui vous permettra de découvrir, du nord au sud, les principaux trésors de la Tunisie, tant culturels que géographiques. Les paysages les plus exceptionnels succèdent aux découvertes historiques, archéologiques et culturelles, dans un rythme agréable.

Nos plus belles évasions

Circuit Joyaux d'Orient 4*

Circuit Douceur Tunisien

hôtel ulysse thalasso & spa 5*

Circuit Authentique Tunisien

Kepler, votre partenaire voyage .

Des voyages d’exception

Des offres de voyage haut de gamme rigoureusement sélectionnées

Les meilleures réductions

Des prix exclusifs et des réductions exceptionnelles.

Nos experts à votre service

Nos équipes sont spécialement formées pour répondre à toutes vos questions

95% de clients satisfaits

Votre satisfaction est notre priorité !

Facilité de paiement

Des moyens de paiement adaptés et la possibilité de payer en plusieurs fois

Paiement sécurisé

Une réservation simple et un paiement en ligne 100% sécurisé

KEPLER travel est un tour-opérateur spécialiste des circuits, des séjours balnéaires, des combinés sur plusieurs destinations à travers le monde. Nous donnons accès à tous nos partenaires et clients des packages inédits, disponibles immédiatement et permettant de réserver des voyages avec une grande flexibilité à des prix très attractifs.

Moyens de paiements acceptés

KEPLER TRAVEL - 27 rue Joubert 75009 – Paris Tél. : 01 85 08 18 84- Email : [email protected] IM 0751500004- N° TVA intracommunautaire FR 93804360402 SAS CAP 10 000 € -RCS PARIS 804360402 Siret : 804 360 402 00015 Made with ♥ by - eDonec

Suggested Searches

• Climate Change
• Expedition 64
• Mars perseverance
• SpaceX Crew-2
• International Space Station
• View All Topics A-Z

Humans in Space

Earth & climate, the solar system, the universe, aeronautics, learning resources, news & events.

NASA, IBM Research to Release New AI Model for Weather, Climate

NASA Tool Gets Ready to Image Faraway Planets

NASA, Sierra Space Deliver Dream Chaser to Florida for Launch Preparation

• Search All NASA Missions
• A to Z List of Missions
• Upcoming Launches and Landings
• Spaceships and Rockets
• Communicating with Missions
• James Webb Space Telescope
• Hubble Space Telescope
• Why Go to Space
• Astronauts Home
• Commercial Space
• Destinations
• Living in Space
• Explore Earth Science
• Earth, Our Planet
• Earth Science in Action
• Earth Multimedia
• Earth Science Researchers
• Pluto & Dwarf Planets
• Asteroids, Comets & Meteors
• The Kuiper Belt
• The Oort Cloud
• Skywatching
• The Search for Life in the Universe
• Black Holes
• The Big Bang
• Dark Energy & Dark Matter
• Earth Science
• Planetary Science
• Astrophysics & Space Science
• The Sun & Heliophysics
• Biological & Physical Sciences
• Lunar Science
• Citizen Science
• Astromaterials
• Aeronautics Research
• Human Space Travel Research
• Science in the Air
• NASA Aircraft
• Flight Innovation
• Supersonic Flight
• Air Traffic Solutions
• Green Aviation Tech
• Drones & You
• Technology Transfer & Spinoffs
• Space Travel Technology
• Technology Living in Space
• Manufacturing and Materials
• Science Instruments
• For Kids and Students
• For Educators
• For Colleges and Universities
• For Professionals
• Science for Everyone
• Requests for Exhibits, Artifacts, or Speakers
• STEM Engagement at NASA
• NASA's Impacts
• Centers and Facilities
• Directorates
• Organizations
• People of NASA
• Internships
• Our History
• Doing Business with NASA
• Get Involved
• Aeronáutica
• Ciencias Terrestres
• Sistema Solar
• All NASA News
• Video Series on NASA+
• Newsletters
• Social Media
• Media Resources
• Upcoming Launches & Landings
• Virtual Events
• Sounds and Ringtones
• Interactives
• STEM Multimedia

Clare Luckey: Shaping the Future of Mars Missions and Inspiring the Artemis Generation 

Hubble Captures a Bright Spiral in the Queen’s Hair

Galaxies Actively Forming in Early Universe Caught Feeding on Cold Gas

Welcome Back to Planet Earth, Expedition 70 Crew! 

Astronaut Exercise

Eleasa Kim: Pioneering CLDP Payload Operations and Cultural Integration

NASA “Wildfire Digital Twin” Pioneers New AI Models and Streaming Data Techniques for Forecasting Fire and Smoke

5 Things to Know About NASA’s Tiny Twin Polar Satellites

NASA’s Psyche Fires Up Its Sci-Fi-Worthy Thrusters

NASA’s Juno Provides High-Definition Views of Europa’s Icy Shell

The Next Full Moon is the Flower, Corn, or Corn Planting Moon

NASA’s TESS Finds Intriguing World Sized Between Earth, Venus

Open Science News

E.11 Consortium in Biological Sciences Clarification on how to Address Eligibility

Updated Points of Contact for LDAP, MDAP, and DDAP

NASA, Industry to Start Designing More Sustainable Jet Engine Core

Aviary: A New NASA Software Platform for Aircraft Modelling

NASA’s X-59 Passes Milestone Toward Safe First Flight 

NASA’s Compact Infrared Cameras Enable New Science

Tech Today: From Spacesuits to Racing Suits

NASA Around the World: Interns Teach Virtual Lessons in Kenya

Jennifer Scott Williams: Leading the Next Giant Leap in Space Exploration and Championing STEM Advocacy

40 Years Ago: NASA Selects its 10th Group of Astronauts

Diez maneras en que los estudiantes pueden prepararse para ser astronautas

Astronauta de la NASA Marcos Berríos

Resultados científicos revolucionarios en la estación espacial de 2023

Nasa’s kepler mission discovers its first rocky planet.

WASHINGTON – NASA’s Kepler mission confirmed the discovery of its first rocky planet, named Kepler-10b. Measuring 1.4 times the size of Earth, it is the smallest planet ever discovered outside our solar system. The discovery of this so-called exoplanet is based on more than eight months of data collected by the spacecraft from May 2009 to early January 2010. “All of Kepler’s best capabilities have converged to yield the first solid evidence of a rocky planet orbiting a star other than our sun,” said Natalie Batalha, Kepler’s deputy science team lead at NASA’s Ames Research Center in Moffett Field, Calif., and primary author of a paper on the discovery accepted by the Astrophysical Journal. “The Kepler team made a commitment in 2010 about finding the telltale signatures of small planets in the data, and it’s beginning to pay off.” Kepler’s ultra-precise photometer measures the tiny decrease in a star’s brightness that occurs when a planet crosses in front of it. The size of the planet can be derived from these periodic dips in brightness. The distance between the planet and the star is calculated by measuring the time between successive dips as the planet orbits the star. Kepler is the first NASA mission capable of finding Earth-size planets in or near the habitable zone, the region in a planetary system where liquid water can exist on the planet’s surface. However, since it orbits once every 0.84 days, Kepler-10b is more than 20 times closer to its star than Mercury is to our sun and not in the habitable zone. Kepler-10 was the first star identified that could potentially harbor a small transiting planet, placing it at the top of the list for ground-based observations with the W.M. Keck Observatory 10-meter telescope in Hawaii. Scientists waiting for a signal to confirm Kepler-10b as a planet were not disappointed. Keck was able to measure tiny changes in the star’s spectrum, called Doppler shifts, caused by the telltale tug exerted by the orbiting planet on the star. “The discovery of Kepler 10-b, a bona-fide rocky world, is a significant milestone in the search for planets similar to our own,” said Douglas Hudgins, Kepler program scientist at NASA Headquarters in Washington. “Although this planet is not in the habitable zone, the exciting find showcases the kinds of discoveries made possible by the mission and the promise of many more to come,” he said. Knowledge of the planet is only as good as the knowledge of the star it orbits. Because Kepler-10 is one of the brighter stars being targeted by Kepler, scientists were able to detect high frequency variations in the star’s brightness generated by stellar oscillations, or starquakes. This analysis allowed scientists to pin down Kepler-10b’s properties. There is a clear signal in the data arising from light waves that travel within the interior of the star. Kepler Asteroseismic Science Consortium scientists use the information to better understand the star, just as earthquakes are used to learn about Earth’s interior structure. As a result of this analysis, Kepler-10 is one of the most well characterized planet-hosting stars in the universe. That’s good news for the team studying Kepler-10b. Accurate stellar properties yield accurate planet properties. In the case of Kepler-10b, the picture that emerges is of a rocky planet with a mass 4.6 times that of Earth and with an average density of 8.8 grams per cubic centimeter – similar to that of an iron dumbbell. Ames manages Kepler’s ground system development, mission operations and science data analysis. NASA’s Jet Propulsion Laboratory in Pasadena, Calif., managed Kepler mission development. Ball Aerospace and Technologies Corp. in Boulder, Colo., developed the Kepler flight system and supports mission operations with the Laboratory for Atmospheric and Space Physics at the University of Colorado in Boulder. The Space Telescope Science Institute in Baltimore archives, hosts and distributes the Kepler science data. Kepler is NASA’s 10th Discovery Mission and is funded by NASA’s Science Mission Directorate at the agency’s headquarters. For more information about the Kepler mission, visit:  

https://www.nasa.gov/kepler

text-only version of this release

NASA press releases and other information are available automatically by sending a blank e-mail message to [email protected] . To unsubscribe from this mailing list, send a blank e-mail message to [email protected] .

Back to NASA Newsroom | Back to NASA Homepage

Trent J. Perrotto Headquarters, Washington 202-358-0321 [email protected]

Rachel Hoover Ames Research Center, Moffett Field, Calif. 650-604-0643 [email protected]

• Ask An Astrobiologist
• Resources Graphic Histories Coloring Pages Heroes Posters Life in the extremes Digital Backgrounds SciComm Guild

Kepler and K2

Kepler data is used to search for earth-sized planets around distant stars..

• Launch Date March 06, 2009
• Arrival Date March 06, 2009
• End Date October 30, 2018
• Mission Type Space Telescope
• Target Extrasolar Planets

Mission Overview The Kepler Mission was a space observatory designed to survey a specific portion of our region of the Milky Way galaxy. An important part of Kepler’s work was the identification of Earth-size planets around distant stars. Kepler lost a second spacecraft reaction wheel in May of 2013, which effectively ended data collection in the original Kepler field after 4 years of continuous monitoring. However, all other Kepler assets remained intact and were used for extended observations, and dubbed the K2 mission . On October 30, 2018, NASA announced that Kepler had run out of fuel and was being retired within its safe orbit, away from Earth. Kepler left a legacy of more than 2,600 exoplanet discoveries.

Relevance to Astrobiology Kepler searched for Earth-sized planets that orbit in the habitable zone of their host star. Such observations are directly relevant to the study of life’s potential in the Universe, and the search for life beyond Earth.

By October 2018, and after nine years in deep space collecting data, Kepler had discovered more than 2,600 planets outside our solar system. Amongst the Kepler discoveries is Kepler-186f, the first validated Earth-size planet in the habitable zone of a star other than the Sun. The vast amount of data collected by Kepler will continued to be analyzed by researchers in the years to come, providing further discoveries that will help to guide the future direction of astrobiology science.

Kepler’s current count of confirmed exoplanets and planet candidates can be found in the NASA Exoplanet Archive at: https://exoplanetarchive.ipac.caltech.edu/docs/counts_detail.html

NASA Astrobiology Involvement Numerous researchers supported by the Astrobiology Program are working with data from Kepler to discover potentially habitable exoplanets. Astrobiologists also use this data to develop new techniques for studying exoplanets in greater and greater detail. This work will inform future missions to characterize exoplanets and exomoons, and possibly identify signs of life by analyzing attributes of these distant worlds, such as atmospheric composition.

The Astrobiologists VPL at the University of Washington (NExSS) Much of the research undertaken by the VPL team is focused on reexamining the limits of the habitable zone and the stellar parameters that affect planetary habitability. Results from this research are relevant in constraining the potential habitability of Earth-sized planets discovered by the Kepler mission. Additionally, VPL Team member Eric Agol, who is also a Kepler guest observer, discovered the most potentially habitable planet to date in the Kepler data, and continues to develop planet detection algorithms to improve the science yield from the Kepler data. VPL Team member Lucianne Walkowicz (Berkeley) is also a member of the Kepler scientific analysis team and works on understanding the photometric variability and flare frequency and strength for stars that serve as planetary hosts. VPL Team member Drake Deming, with graduate student Holly Short, is developing new techniques to derive planetary atmospheric characteristics from combined Kepler data, also increasing the science yield of the mission.

NAI Carnegie Institution of Washington Team member Alan Boss is a collaborator on the Kepler mission. Both he and Post Doctoral Fellow Chris Stark are active participants in the Kepler mission.

Modeling by NAI NASA Ames Research Center Co-I Jack Lissauer is being used to interpret observations of planets that Kepler discovers using theoretical models.

NAI Massachusetts Institute of Technology Team members Dimitar Sasselov and Lisa Kaltenegger are Kepler Investigators.

NAI Pennsylvania State University Team members Jim Kasting, Jason Wright, Suvrath Mahadevan, and Steinn Sigurdsson are all using Kepler data and results in their Biosignatures in Extraterrestrial Settings work.

Kepler Planet Candidates: 4,496 Confirmed Planets: 2,337 Small Habitable Zone Confirmed: 30

K2 Planet Candidates: 515 Confirmed Planets: 178

Data concerning Kepler and K2 discoveries is as of Nov, 2017. More details concerning discoveries for the Kepler and K2 missions can be found at http://kepler.nasa.gov/Mission/discoveries/ .

The “last light” image, taken on Sept. 25, 2018, represents the final record of Kepler’s full field of view before the depletion of fuel permanently ended the work of this historic planet-hunting spacecraft.

Kepler detects planets by looking for periodic dips in the brightness of stars. Some planets pass in front of their stars as seen from our point of view on Earth; when they do, they cause their stars to dim slightly, an event Kepler can see.

Kepler is designed to survey more than 100,000 stars in our galaxy to determine the number of sun-like stars that have Earth-size and larger planets.

Each rectangle indicates the specific region of the sky covered by each CCD element of the Kepler photometer. There are a total of 42 CCD elements in pairs, each pair comprising a square. Credit: Carter Roberts / Eastbay Astronomical Society

The Kepler spacecraft made a comeback after a technical setback: the loss of its ultra precise pointing capability. Revived as the K2 mission and now in its fifth observing campaign, the spacecraft continues to operate beautifully.

Kepler Timeline

The timeline series includes a compilation of artist's concepts depicting milestones from the Kepler mission-NASA's first mission capable of detecting Earth-size planets around sun-like stars. Milestones include launch of the space telescope, the first transiting planetary system, the smallest planet with both radius and mass measurements, the first six-planet system, the first double-star planet, the smallest planet in the habitable zone of a star similar to our sun.

706968main_Kepler_timelines_2012Nov14

(tif) (20.61 MB)

You are using an outdated browser. Please upgrade your browser to improve your experience.

Kepler-186f

Explore alien worlds.

Exoplanet Travel Bureau

Strange New Worlds

Historic Timeline

AIR & SPACE MAGAZINE

Kepler-186f: the most earthlike planet yet.

This one is the same size as our world, and may have water on its surface.

Tony Reichhardt

Scientists using NASA’s Kepler telescope have found the first Earth-size planet orbiting its star at just the right distance for water to exist on its surface.  The finding, reported in this week’s Science , is an important milestone, but only one step in what’s likely to be a long road to identifying habitable planets.

The new world is the outermost of five Earth-size planets discovered circling a red dwarf star called Kepler-186, which is about 500 light years away.  Because the star is cooler than our sun, its habitable zone—the region where liquid water could exist without boiling or freezing—is closer in. That made the scientists’ job easier, since finding small planets in wider orbits requires more observing time.

Astronomers have already discovered dozens of large gas planets in stellar habitable zones, but this is the first of Earth’s size—or rather, the first to pass the stringent confirmation process. A team led by Elisa Quintana of the SETI Institute enlisted large ground-based telescopes to search around Kepler-186 for a background star or faint, unseen stellar companion that could have masqueraded in the Kepler data as small planets. Finding none, they stuck with their original conclusion that they were seeing a distant planetary system. Quintana and her colleagues presume that Kepler-186f is rocky based on its size, even though they don’t yet know its density.

We should expect many more small planets to pop out of the Kepler data as scientists analyze data gathered over longer periods of time. But just as they seem to be reaching their goal of finding a true Earth analog, the definition of “analog” and “habitable zone” have gotten more complicated. Because Kepler-186 isn’t the same type of star as our sun, Tom Barclay, a research scientist with the Bay Area Environmental Research Institute in Mountain View, California, calls Kepler-186f “an Earth cousin, rather than an Earth twin.”

Furthermore, he said in a NASA press conference today, “Just because a planet is in the habitable zone, it doesn’t mean it’s habitable.” Many other factors, from the presence of an atmosphere to the composition of the crust, are likely to affect the chances that life (or terrestrial-type life that we would recognize) could exist there. In other words, we’re still a long way from finding another world just like our own.

Get the latest stories in your inbox every weekday.

Tony Reichhardt | READ MORE

Tony Reichhardt is a senior editor at Air & Space .

NASA's Kepler Marks 1,000th Exoplanet Discovery, Uncovers More Small Worlds in Habitable Zones

NASA's Kepler Space Telescope has, to date, offered scientists more than 4,000 candidate planets -- the 1,000th of which was recently verified.

How many stars like our sun host planets like our Earth? NASA's Kepler Space Telescope continuously monitored more than 150,000 stars beyond our solar system, and to date has offered scientists an assortment of more than 4,000 candidate planets for further study -- the 1,000th of which was recently verified.

Using Kepler data, scientists reached this millenary milestone after validating that eight more candidates spotted by the planet-hunting telescope are, in fact, planets. The Kepler team also has added another 554 candidates to the roll of potential planets, six of which are near-Earth-size and orbit in the habitable zone of stars similar to our sun.

Three of the newly-validated planets are located in their distant suns' habitable zone, the range of distances from the host star where liquid water might exist on the surface of an orbiting planet. Of the three, two are likely made of rock, like Earth.

"Each result from the planet-hunting Kepler mission's treasure trove of data takes us another step closer to answering the question of whether we are alone in the universe," said John Grunsfeld, associate administrator of NASA's Science Mission Directorate at the agency's headquarters in Washington. "The Kepler team and its science community continue to produce impressive results with the data from this venerable explorer."

To determine whether a planet is made of rock, water or gas, scientists must know its size and mass. When its mass can't be directly determined, scientists can infer what the planet is made of based on its size.

Two of the newly validated planets, Kepler-438b and Kepler-442b, are less than 1.5 times the diameter of Earth. Kepler-438b, 475 light-years away, is 12 percent bigger than Earth and orbits its star once every 35.2 days. Kepler-442b, 1,100 light-years away, is 33 percent bigger than Earth and orbits its star once every 112 days.

Both Kepler-438b and Kepler-442b orbit stars smaller and cooler than our sun, making the habitable zone closer to their parent star, in the direction of the constellation Lyra. The research paper reporting this finding has been accepted for publication in The Astrophysical Journal.

"With each new discovery of these small, possibly rocky worlds, our confidence strengthens in the determination of the true frequency of planets like Earth," said co-author Doug Caldwell, SETI Institute Kepler scientist at NASA's Ames Research Center at Moffett Field, California. "The day is on the horizon when we'll know how common temperate, rocky planets like Earth are."

With the detection of 554 more planet candidates from Kepler observations conducted May 2009 to April 2013, the Kepler team has raised the candidate count to 4,175. Eight of these new candidates are between one to two times the size of Earth, and orbit in their sun's habitable zone. Of these eight, six orbit stars that are similar to our sun in size and temperature. All candidates require follow-up observations and analysis to verify they are actual planets.

"Kepler collected data for four years -- long enough that we can now tease out the Earth-size candidates in one Earth-year orbits," said Fergal Mullally, SETI Institute Kepler scientist at Ames who led the analysis of a new candidate catalog. "We're closer than we've ever been to finding Earth twins around other sun-like stars. These are the planets we're looking for."

These findings also have been submitted for publication in The Astrophysical Journal Supplement.

Work is underway to translate these recent discoveries into estimates of how often rocky planets appear in the habitable zones of stars like our sun, a key step toward NASA's goal of understanding our place in the universe.

Scientists also are working on the next catalog release of Kepler's four-year data set. The analysis will include the final month of data collected by the mission and also will be conducted using sophisticated software that is more sensitive to the tiny telltale signatures of small Earth-size planets than software used in the past.

Ames is responsible for Kepler's mission operations, ground system development and science data analysis. NASA's Jet Propulsion Laboratory in Pasadena, California, managed Kepler mission development. Ball Aerospace & Technologies Corp. in Boulder, Colorado, developed the Kepler flight system and supports mission operations with the Laboratory for Atmospheric and Space Physics at the University of Colorado in Boulder. The Space Telescope Science Institute in Baltimore archives, hosts and distributes Kepler science data. Kepler is NASA's 10th Discovery Mission and was funded by the agency's Science Mission Directorate in Washington.

For more information about the Kepler mission, visit:

http://www.nasa.gov/kepler

News Media Contact

Whitney Clavin

626-395-1944

[email protected]

Felicia Chou

Headquarters, Washington

202-358-0257

[email protected]

Michele Johnson

650-604-6882

[email protected]