Espace: après 12 ans de mission, la sonde spatiale Rosetta s'est écrasée sur la comète Tchouri

Mission accomplie! 12 ans, 6 mois et 28 jours après le début de sa mission, la sonde Rosetta s'est écrasée sur la comète Tchouri, à 6,5 milliards de kilomètres de la planète Terre.
30 sept. 2016, 12:54
/ Màj. le 30 sept. 2016 à 13:22
The  photo released by ESA and taken by OSIRIS wide-angle camera on the Rosetta space probe on Nov. 22, 2014 from a distance of 30 km (18.6 miles) from Comet 67P/Churyumov-Gerasimenko shows the faint jets of the comet's activity. After a journey lasting 12 years, a date has been set for the Rosetta spacecraft's final descent onto comet 67P/Churyumov-Gerasimenko. The European Space Agency says the probe will crash onto the comet Sept. 30, joining its sidekick Philae. The lander touched down nearly two years ago.   (ESA/Rosetta/OSIRIS via AP)

Lancée le 2 mars 2004, Rosetta a parcouru le système solaire pendant dix ans avant d'arriver à destination, le 6 août 2014. Elle a ensuite largué le robot Philae sur la surface de Tchouri le 12 novembre 2014, une première.

Ce 30 septembre 2016, l'Agence spatiale européenne (ESA) a décidé de terminer la mission Rosetta en l'envoyant s'écraser contre la comète. Après une longue attente, celle-ci a atteint la surface à 13:22 heure suisse.

 

 

Durant son plongeon, la sonde a envoyé des images à très haute résolution du noyau et analysé les gaz et les poussières plus près que jamais de la surface cométaire.

 

 

 

Rosetta n'avait pas été conçue pour atterrir. La sonde a été programmée pour s'éteindre dès qu'elle devait entrer en contact avec la surface du noyau cométaire. Sur la fin, sa vitesse a atteint 90 centimètres par seconde (3,2 km/heure) soit la vitesse de la marche humaine.

Décidée en 1993 par l'Agence spatiale européenne, elle est auréolée de plusieurs succès: Rosetta est la première sonde à avoir escorté une comète dans sa course, pendant plus de deux ans. Elle a récolté une abondante moisson de données qui occuperont les scientifiques "pendant des décennies", selon l'ESA.

 

 

 

Philae le robot

Son petit robot-laboratoire Philae a réalisé le 12 novembre 2014 une première historique en se posant sur un de ces petits corps qui sont parmi les plus primitifs du système solaire.

La mission Rosetta vise à mieux comprendre la formation du système solaire. Les comètes sont apparues il y a 4,5 milliards d'années et sont en quelque sorte restées dans le "congélateur" de l'espace pendant quasiment tout ce temps. Ce qui en fait des témoins d'exception.

Lancée en mars 2004, Rosetta, qui a parcouru 7,9 milliards de kilomètres, escorte depuis août 2014 la comète Tchourioumov-Guérassimenko. Mais celle-ci s'éloigne dorénavant de plus en plus du Soleil.

 

 

Dotée de grands panneaux solaires, la sonde commence à manquer de puissance. L'ESA a donc choisi de mettre fin de façon à la mission pendant qu'elle contrôle encore la sonde et que celle-ci a encore assez de puissance pour travailler. La sonde et la comète se trouvent à environ 720 millions de kilomètres de la Terre.

epa05561967 (FILE) An undated file handout picture shows a computer animation provided by European Space Agency (ESA) in Darmstadt, Germany, showing the ESA satellite 'Rosetta' during its approach on earth.  The European Space Agency (ESA) on 29 September 2016 announced it will command its Rosetta spacecraft to a crash-landing onto 67P/Churyumov-Gerasimenko comet. Rosetta reached the comet's orbit in August 2014 after its launch from Earth in 2004.  EPA/C. CAREAU / HANDOUT  HANDOUT EDITORIAL USE ONLY *** Local Caption *** 01931893
epa05561967 (FILE) An undated file handout picture shows a computer animation provided by European Space Agency (ESA) in Darmstadt, Germany, showing the ESA satellite 'Rosetta' during its approach on earth. The European Space Agency (ESA) on 29 September 2016 announced it will command its Rosetta spacecraft to a crash-landing onto 67P/Churyumov-Gerasimenko comet. Rosetta reached the comet's orbit in August 2014 after its launch from Earth in 2004. EPA/C. CAREAU / HANDOUT HANDOUT EDITORIAL USE ONLY *** Local Caption *** 01931893 ©KEYSTONE
epa04033199 (L-R) Gaele Winters, Director of ESA Improvement Projects, Michael Menking, Astrium Vice President Orbital Systems, Johann-Dietrich Woerner, Chairman of the Executive Board of the German Aerospace Center (DLR), Jean-Jacques Dordain, ESA Director General, amd Thomas Arthur Reiter, ESA Director of Human Spaceflight and Operations, celebrate as the Rosetta probe transmits its first signal after 957 days to the headquarters of European Space Agency (ESA) in Darmstadt, Germany, 20 January 2014. The European Space Agency's (ESA) decade-long quest to place a robotic lander on a comet reached a key milestone, after the Rosetta probe sent a signal to Earth, ending two years in a deep sleep. The automated reactivation of Rosetta marks the beginning of the final phase of the endeavor. A robotic lander attached to the space probe is expected to make contact with Comet 67P/Churyumov-Gerasimenko in November.  EPA/ANDRE HIRTZ
epa04033199 (L-R) Gaele Winters, Director of ESA Improvement Projects, Michael Menking, Astrium Vice President Orbital Systems, Johann-Dietrich Woerner, Chairman of the Executive Board of the German Aerospace Center (DLR), Jean-Jacques Dordain, ESA Director General, amd Thomas Arthur Reiter, ESA Director of Human Spaceflight and Operations, celebrate as the Rosetta probe transmits its first signal after 957 days to the headquarters of European Space Agency (ESA) in Darmstadt, Germany, 20 January 2014. The European Space Agency's (ESA) decade-long quest to place a robotic lander on a comet reached a key milestone, after the Rosetta probe sent a signal to Earth, ending two years in a deep sleep. The automated reactivation of Rosetta marks the beginning of the final phase of the endeavor. A robotic lander attached to the space probe is expected to make contact with Comet 67P/Churyumov-Gerasimenko in November. EPA/ANDRE HIRTZ ©KEYSTONE
Celebrating scientists in the main control room appear on a video screen at the European Space Agency after the first unmanned spacecraft Philae landed on a comet called 67P/Churyumov-Gerasimenko, in  Darmstadt, Germany, Wednesday, Nov. 12, 2014. Europe's Rosetta space probe was launched in 2004 with the aim of studying the comet and learning more about the origins of the universe. (AP Photo/Michael Probst)
Celebrating scientists in the main control room appear on a video screen at the European Space Agency after the first unmanned spacecraft Philae landed on a comet called 67P/Churyumov-Gerasimenko, in Darmstadt, Germany, Wednesday, Nov. 12, 2014. Europe's Rosetta space probe was launched in 2004 with the aim of studying the comet and learning more about the origins of the universe. (AP Photo/Michael Probst) ©KEYSTONE
An European Space Agency image taken from the ESA's webside on Friday, Sept 5. 2008 shows a diagram showing the approach of ESA's Rosetta spacecraft to asteroid (2867) Steins on Sept. 5, 2008. Steins is Rosettaís first nominal scientific target and is located in the main asteroid belt between the orbits of Mars and Jupiter. The spacecraft encountered the asteroid in the course of its first incursion into the main asteroid belt while on its way to Comet 67P/Churyumov-Gerasimenko, which is scheduled for 2014.  (AP Photo/ESA, C.Carreau)  ** EDITORIAL USE ONLY * MANDATORY CREDIT: ESA, C.CARREAU * NO SALES **
An European Space Agency image taken from the ESA's webside on Friday, Sept 5. 2008 shows a diagram showing the approach of ESA's Rosetta spacecraft to asteroid (2867) Steins on Sept. 5, 2008. Steins is Rosettaís first nominal scientific target and is located in the main asteroid belt between the orbits of Mars and Jupiter. The spacecraft encountered the asteroid in the course of its first incursion into the main asteroid belt while on its way to Comet 67P/Churyumov-Gerasimenko, which is scheduled for 2014. (AP Photo/ESA, C.Carreau) ** EDITORIAL USE ONLY * MANDATORY CREDIT: ESA, C.CARREAU * NO SALES ** ©KEYSTONE
epa05561968 (FILE) A file handout picture released 02 March 2004 by the Eureopan Space Agency (ESA) shows the computer generated image of space probe Rosetta (R) during the approach for landing on the comet 67P/Churyumov-Gerasimenko. The European Space Agency (ESA) on 29 September 2016 announced it will command its Rosetta spacecraft to a crash-landing onto 67P/Churyumov-Gerasimenko comet. Rosetta reached the comet's orbit in August 2014 after its launch from Earth in 2004. m  EPA/ESA / HANDOUT  HANDOUT EDITORIAL USE ONLY *** Local Caption *** 00145726
epa05561968 (FILE) A file handout picture released 02 March 2004 by the Eureopan Space Agency (ESA) shows the computer generated image of space probe Rosetta (R) during the approach for landing on the comet 67P/Churyumov-Gerasimenko. The European Space Agency (ESA) on 29 September 2016 announced it will command its Rosetta spacecraft to a crash-landing onto 67P/Churyumov-Gerasimenko comet. Rosetta reached the comet's orbit in August 2014 after its launch from Earth in 2004. m EPA/ESA / HANDOUT HANDOUT EDITORIAL USE ONLY *** Local Caption *** 00145726 ©KEYSTONE
epa04342519 An undated handout made available by the European Space Agency (ESA) on 06 August 2014 showing an artist impression of ESA's Rosetta approaching comet 67P/Churyumov-Gerasimenko. ESA state that Rosetta launched in 2004 will arrive at comet 67P/Churyumov-Gerasimenko on 06 August 2014. It will be the first mission in history to rendezvous with a comet, escort it as it orbits the Sun, and deploy a lander to its surface. Rosetta is an ESA mission with contributions from its member states and NASA. Rosetta's Philae lander is provided by a consortium led by DLR, MPS, CNES and ASI.  EPA/ESA / HANDOUT  HANDOUT EDITORIAL USE ONLY/NO SALES
epa04342519 An undated handout made available by the European Space Agency (ESA) on 06 August 2014 showing an artist impression of ESA's Rosetta approaching comet 67P/Churyumov-Gerasimenko. ESA state that Rosetta launched in 2004 will arrive at comet 67P/Churyumov-Gerasimenko on 06 August 2014. It will be the first mission in history to rendezvous with a comet, escort it as it orbits the Sun, and deploy a lander to its surface. Rosetta is an ESA mission with contributions from its member states and NASA. Rosetta's Philae lander is provided by a consortium led by DLR, MPS, CNES and ASI. EPA/ESA / HANDOUT HANDOUT EDITORIAL USE ONLY/NO SALES ©KEYSTONE
epa04032501 A model of the small laboratory 'Philae' is pictured in the Esa control center in Darmstadt, Germany, 20 January 2014. The laboratory will be flown to a comet by space probe 'Rosetta' and is supposed to land on the comet. 'Rosetta' will be woken up from an energy saving hibernation after 957 days. The probe is in space since 2004.  EPA/DANIEL REINHARDT
epa04032501 A model of the small laboratory 'Philae' is pictured in the Esa control center in Darmstadt, Germany, 20 January 2014. The laboratory will be flown to a comet by space probe 'Rosetta' and is supposed to land on the comet. 'Rosetta' will be woken up from an energy saving hibernation after 957 days. The probe is in space since 2004. EPA/DANIEL REINHARDT ©KEYSTONE
The picture of the Philae lander  released by the European Space Agency ESA on Wednesday, Nov. 12, 2014 was taken by Rosetta's OSIRIS system shortly after its separation from the mother spaceship.  On Wednesday, Nov. 12,  2014 the Philae lander detached from Rosetta and started it's descent to the 4-kilometer-wide (2.5-mile-wide) 67P/Churyumov-Gerasimenko comet.  (AP Photo/ESA)
The picture of the Philae lander released by the European Space Agency ESA on Wednesday, Nov. 12, 2014 was taken by Rosetta's OSIRIS system shortly after its separation from the mother spaceship. On Wednesday, Nov. 12, 2014 the Philae lander detached from Rosetta and started it's descent to the 4-kilometer-wide (2.5-mile-wide) 67P/Churyumov-Gerasimenko comet. (AP Photo/ESA) ©KEYSTONE
epa05561969 (FILE) A file picture dated 20 January 2014 shows a scientist from the European Space Agency (ESA) with an airworthy copy of space probe 'Rosetta' in the ESA control center in Darmstadt, Germany. The European Space Agency (ESA) on 29 September 2016 announced it will command its Rosetta spacecraft to a crash-landing onto 67P/Churyumov-Gerasimenko comet. Rosetta reached the comet's orbit in August 2014 after its launch from Earth in 2004.  EPA/DANIEL REINHARDT *** Local Caption *** 51186678
epa05561969 (FILE) A file picture dated 20 January 2014 shows a scientist from the European Space Agency (ESA) with an airworthy copy of space probe 'Rosetta' in the ESA control center in Darmstadt, Germany. The European Space Agency (ESA) on 29 September 2016 announced it will command its Rosetta spacecraft to a crash-landing onto 67P/Churyumov-Gerasimenko comet. Rosetta reached the comet's orbit in August 2014 after its launch from Earth in 2004. EPA/DANIEL REINHARDT *** Local Caption *** 51186678 ©KEYSTONE
epa05561966 (FILE) A file handout picture released by the European Space Agency (ESA) on 13 November 2014 shows the panoramic view created from the first two CIVA images, confirming that Rosetta's lander Philae is safely on the surface of Comet 67P/Churyumov-Gerasimenko. The European Space Agency (ESA) on 29 September 2016 announced it will command its Rosetta spacecraft to a crash-landing onto 67P/Churyumov-Gerasimenko comet. Rosetta reached the comet's orbit in August 2014 after its launch from Earth in 2004. m  EPA/ESA / HANDOUT  HANDOUT EDITORIAL USE ONLY *** Local Caption *** 51661107
epa05561966 (FILE) A file handout picture released by the European Space Agency (ESA) on 13 November 2014 shows the panoramic view created from the first two CIVA images, confirming that Rosetta's lander Philae is safely on the surface of Comet 67P/Churyumov-Gerasimenko. The European Space Agency (ESA) on 29 September 2016 announced it will command its Rosetta spacecraft to a crash-landing onto 67P/Churyumov-Gerasimenko comet. Rosetta reached the comet's orbit in August 2014 after its launch from Earth in 2004. m EPA/ESA / HANDOUT HANDOUT EDITORIAL USE ONLY *** Local Caption *** 51661107 ©KEYSTONE
FILE - This undated image provided by the European Space Agency ESA shows an artist's impression of the Philae lander. Scientists at the European Space Agency are expecting their comet-chasing probe Rosetta to wake from almost three years of hibernation at 11 a.m. Monday Jan. 20, 2014 (1000 GMT; 5 a.m. EST) and phone home to say all is well. (AP Photo/ESA ATG medialab , Astrium E, Viktor, File)
FILE - This undated image provided by the European Space Agency ESA shows an artist's impression of the Philae lander. Scientists at the European Space Agency are expecting their comet-chasing probe Rosetta to wake from almost three years of hibernation at 11 a.m. Monday Jan. 20, 2014 (1000 GMT; 5 a.m. EST) and phone home to say all is well. (AP Photo/ESA ATG medialab , Astrium E, Viktor, File) ©KEYSTONE
epa04703010 A handout photo made available 13 April 2015 by the European Space Agency, esa, showing a composite image of 18 images showing off the comet 67P/Churyumov-Gerasimenko activity from different angles as seen between 31 January (top L) and 25 March (bottom R), when the spacecraft was at distances of about 30 to 100 km from the comet. At the same time, Comet 67P/Churyumov-Gerasimenko was at distances between 363 million and 300 million km from the Sun. As the comet continues to move closer to the Sun, the warming of comet continues and activity rises, while pressure from the solar wind causes some of the materials to stream out into long tails, one made of gas, the other of dust.  EPA/ESA/Rosetta/NAVCAM ñ CC BY-SA IGO 3.0 / HANDOUT  HANDOUT EDITORIAL USE ONLY/NO SALES
epa04703010 A handout photo made available 13 April 2015 by the European Space Agency, esa, showing a composite image of 18 images showing off the comet 67P/Churyumov-Gerasimenko activity from different angles as seen between 31 January (top L) and 25 March (bottom R), when the spacecraft was at distances of about 30 to 100 km from the comet. At the same time, Comet 67P/Churyumov-Gerasimenko was at distances between 363 million and 300 million km from the Sun. As the comet continues to move closer to the Sun, the warming of comet continues and activity rises, while pressure from the solar wind causes some of the materials to stream out into long tails, one made of gas, the other of dust. EPA/ESA/Rosetta/NAVCAM ñ CC BY-SA IGO 3.0 / HANDOUT HANDOUT EDITORIAL USE ONLY/NO SALES ©KEYSTONE
A model of Rosetta lander Philae stands on a model of comet 67P/Churyumov-Gerasimenko, at the European Space Agency ESA in Darmstadt, Germany, Wednesday, Nov.12, 2014. Europe's Rosetta space probe was launched in 2004 with the aim of studying the comet and learning more about one of the biggest questions about the origin of the universe. (AP Photo/Michael Probst)
A model of Rosetta lander Philae stands on a model of comet 67P/Churyumov-Gerasimenko, at the European Space Agency ESA in Darmstadt, Germany, Wednesday, Nov.12, 2014. Europe's Rosetta space probe was launched in 2004 with the aim of studying the comet and learning more about one of the biggest questions about the origin of the universe. (AP Photo/Michael Probst) ©KEYSTONE
epa05526556 A combined photo provided by the European Space Agency (ESA) on 06 September 2016 shows images (L and bottom R) of the ESA's probe 'Rosetta's lander 'Philae' identified in its 'OSIRIS' narrow-angle camera images taken on 02 September 2016 from a distance of 2.7 kilometers. The image scale is about 5 cm/pixel. Philae's one meter wide body and two of its three legs can be seen extended from the body (bottom R). The images also provide proof of Philae's orientation. A Rosetta Navigation Camera image taken on 16 April 2015 is shown (top R) for context, with the approximate location of Philae on the small lobe of Comet Churyumov-Gerasimenko marked, ESA explained in a corresponding media release.  EPA/ESA/Rosetta/MPS for OSIRIS/MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA MANDATORY CREDIT HANDOUT EDITORIAL USE ONLY/NO SALES
epa05526556 A combined photo provided by the European Space Agency (ESA) on 06 September 2016 shows images (L and bottom R) of the ESA's probe 'Rosetta's lander 'Philae' identified in its 'OSIRIS' narrow-angle camera images taken on 02 September 2016 from a distance of 2.7 kilometers. The image scale is about 5 cm/pixel. Philae's one meter wide body and two of its three legs can be seen extended from the body (bottom R). The images also provide proof of Philae's orientation. A Rosetta Navigation Camera image taken on 16 April 2015 is shown (top R) for context, with the approximate location of Philae on the small lobe of Comet Churyumov-Gerasimenko marked, ESA explained in a corresponding media release. EPA/ESA/Rosetta/MPS for OSIRIS/MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA MANDATORY CREDIT HANDOUT EDITORIAL USE ONLY/NO SALES ©KEYSTONE
epa04487462 A handout picture made available by the European Space Agency (ESA) on 13 November 2014 and made by the CIVA camera on Rosettaís Philae lander, shows as the spacecraft have snapped a selfie with comet 67P/ChuryumovñGerasimenko from a distance of about 16 km from the surface of the comet. The image was taken on 07 October 2014 and captures the side of the Rosetta spacecraft and one of Rosettaís 14 m-long solar wings, with the comet in the background. Two images with different exposure times were combined to bring out the faint details in this very high contrast situation. The comet's active ëneckí region is clearly visible, with streams of dust and gas extending away from the surface. ESA wrote a new chapter in the history of space exploration on 12 November 2014 by landing the probe Philae on the surface of a comet for the first time, marking the climax of a decade-long mission. But the mission encountered a problem after the lander failed to deploy anchors to keep the craft tethered to the comet.  EPA/ESA/Rosetta/Philae/CIVA Black and white only HANDOUT EDITORIAL USE ONLY/NO SALES
epa04487462 A handout picture made available by the European Space Agency (ESA) on 13 November 2014 and made by the CIVA camera on Rosettaís Philae lander, shows as the spacecraft have snapped a selfie with comet 67P/ChuryumovñGerasimenko from a distance of about 16 km from the surface of the comet. The image was taken on 07 October 2014 and captures the side of the Rosetta spacecraft and one of Rosettaís 14 m-long solar wings, with the comet in the background. Two images with different exposure times were combined to bring out the faint details in this very high contrast situation. The comet's active ëneckí region is clearly visible, with streams of dust and gas extending away from the surface. ESA wrote a new chapter in the history of space exploration on 12 November 2014 by landing the probe Philae on the surface of a comet for the first time, marking the climax of a decade-long mission. But the mission encountered a problem after the lander failed to deploy anchors to keep the craft tethered to the comet. EPA/ESA/Rosetta/Philae/CIVA Black and white only HANDOUT EDITORIAL USE ONLY/NO SALES ©KEYSTONE
epa04487698 A handout picture made available by the European Space Agency (ESA) on 13 November 2014 and made by the CIVA camera on Rosetta's Philae lander, showing a partial view of the lander and the comet 67P/Churyumovv-Gerasimenko. ESA on 13 November 2014 confirmed Rosettas lander Philae is safely on the surface of Comet 67P/Churyumov-Gerasimenko, as the CIVA images confirm. One of the landervs three feet can be seen in the foreground. The full panoramic from CIVA will be delivered later 13 November.  EPA/ESA/Rosetta/Philae/CIVA Black and white only, HANDOUT EDITORIAL USE ONLY/NO SALES
epa04487698 A handout picture made available by the European Space Agency (ESA) on 13 November 2014 and made by the CIVA camera on Rosetta's Philae lander, showing a partial view of the lander and the comet 67P/Churyumovv-Gerasimenko. ESA on 13 November 2014 confirmed Rosettas lander Philae is safely on the surface of Comet 67P/Churyumov-Gerasimenko, as the CIVA images confirm. One of the landervs three feet can be seen in the foreground. The full panoramic from CIVA will be delivered later 13 November. EPA/ESA/Rosetta/Philae/CIVA Black and white only, HANDOUT EDITORIAL USE ONLY/NO SALES ©KEYSTONE
epa04032063 An undated handout  artist's view of Rosetta made available by the European Space Agency (ESA) on 20 January 2014 showing Europe's Rosetta probe. Media reports on 20 January 2014 state that NASA is participating in the European Space Agency's Rosetta mission, whose goal is to observe one such space-bound icy dirt ball from up close -- for months on end. The spacecraft, festooned with 25 instruments between its lander and orbiter (including three from NASA), is programmed to 'wake up' from hibernation on 20 January 2014. After a check-out period, it will monitor comet 67P/Churyumov-Gerasimenko as it makes its nosedive into, and then climb out of, the inner solar system.  EPA/ESA / HANDOUT  HANDOUT EDITORIAL USE ONLY/NO SALES
epa04032063 An undated handout artist's view of Rosetta made available by the European Space Agency (ESA) on 20 January 2014 showing Europe's Rosetta probe. Media reports on 20 January 2014 state that NASA is participating in the European Space Agency's Rosetta mission, whose goal is to observe one such space-bound icy dirt ball from up close -- for months on end. The spacecraft, festooned with 25 instruments between its lander and orbiter (including three from NASA), is programmed to 'wake up' from hibernation on 20 January 2014. After a check-out period, it will monitor comet 67P/Churyumov-Gerasimenko as it makes its nosedive into, and then climb out of, the inner solar system. EPA/ESA / HANDOUT HANDOUT EDITORIAL USE ONLY/NO SALES ©KEYSTONE
The photo released by European Space Agency ESA on Monday, Sept. 5, 2016 shows a photo of the comet lander Philae on photo taken by Rosetta's OSIRIS narrow-angle camera on Sept. 2, 2016 from a distance of 2.7 km of the Comet 67P/Churyumov–Gerasimenko. Philae was last seen when it first touched down at Agilkia, bounced and then flew for another two hours before ending up at a location later named Abydos, on the comet’s smaller lobe.  (ESA/Rosetta/MPS for OSIRIS via AP)
The photo released by European Space Agency ESA on Monday, Sept. 5, 2016 shows a photo of the comet lander Philae on photo taken by Rosetta's OSIRIS narrow-angle camera on Sept. 2, 2016 from a distance of 2.7 km of the Comet 67P/Churyumov–Gerasimenko. Philae was last seen when it first touched down at Agilkia, bounced and then flew for another two hours before ending up at a location later named Abydos, on the comet’s smaller lobe. (ESA/Rosetta/MPS for OSIRIS via AP) ©KEYSTONE
The photo released by European Space Agency ESA on Monday, Sept. 5, 2016 shows a photo of the comet lander Philae in a crack on the right side of a photo taken by Rosetta's OSIRIS narrow-angle camera on Sept. 2, 2016 from a distance of 2.7 km of the Comet 67P/Churyumov–Gerasimenko. Philae was last seen when it first touched down at Agilkia, bounced and then flew for another two hours before ending up at a location later named Abydos, on the comet’s smaller lobe.  (ESA/Rosetta/MPS for OSIRIS via AP)
The photo released by European Space Agency ESA on Monday, Sept. 5, 2016 shows a photo of the comet lander Philae in a crack on the right side of a photo taken by Rosetta's OSIRIS narrow-angle camera on Sept. 2, 2016 from a distance of 2.7 km of the Comet 67P/Churyumov–Gerasimenko. Philae was last seen when it first touched down at Agilkia, bounced and then flew for another two hours before ending up at a location later named Abydos, on the comet’s smaller lobe. (ESA/Rosetta/MPS for OSIRIS via AP) ©KEYSTONE
epa04486393 A handout picture made available by the European Space Agency (ESA) shows an artist impression made available on 12 November 2014 of the animation of Philae separating from Rosetta and descending to the surface of comet 67P/Churyumov-Gerasimenko. The European Space Agency's Rosetta spacecraft dispatched a robot to land on a comet's surface 12 November 2014, ten years after beginning its pursuit through the solar system.  EPA/ESA / ATG MEDIALAB / HANDOUT  HANDOUT EDITORIAL USE ONLY/NO SALES
epa04486393 A handout picture made available by the European Space Agency (ESA) shows an artist impression made available on 12 November 2014 of the animation of Philae separating from Rosetta and descending to the surface of comet 67P/Churyumov-Gerasimenko. The European Space Agency's Rosetta spacecraft dispatched a robot to land on a comet's surface 12 November 2014, ten years after beginning its pursuit through the solar system. EPA/ESA / ATG MEDIALAB / HANDOUT HANDOUT EDITORIAL USE ONLY/NO SALES ©KEYSTONE
epa05562659 A handout photograph made available by the European Space Agency (ESA) on 29 September 2016 showing OSIRIS wide-angle camera image taken at 11:49 GMT on 29 September 2016, when Rosetta was 22.9 km from Comet 67P/ChuryumovñGerasimenko. On 30 September 2016, Rosetta descends to the surface of the comet, targeting a region on the small comet's lobe. Rosetta is set to complete its historic mission in a controlled descent to the surface of its comet on 30 September, with the end of mission confirmation predicted to be within 20 minutes of 11:20 GMT (13:20 CEST).  EPA/ESA / HANDOUT MANDATORY CREDIT HANDOUT EDITORIAL USE ONLY/NO SALES
epa05562659 A handout photograph made available by the European Space Agency (ESA) on 29 September 2016 showing OSIRIS wide-angle camera image taken at 11:49 GMT on 29 September 2016, when Rosetta was 22.9 km from Comet 67P/ChuryumovñGerasimenko. On 30 September 2016, Rosetta descends to the surface of the comet, targeting a region on the small comet's lobe. Rosetta is set to complete its historic mission in a controlled descent to the surface of its comet on 30 September, with the end of mission confirmation predicted to be within 20 minutes of 11:20 GMT (13:20 CEST). EPA/ESA / HANDOUT MANDATORY CREDIT HANDOUT EDITORIAL USE ONLY/NO SALES ©KEYSTONE
par Mouna Hussain