Close-ups of a curious surface texture on Comet 67P nicknamed "goosebumps," all of them at a scale of around 3 meters and spanning areas more than 100 meters. ESA/Rosetta/MPS hide caption

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The Rosetta spacecraft, which orbits the comet, captured this series of images of the Philae lander bounding off the surface. The precise spot the lander came to a stop remains unknown. Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA hide caption

toggle caption Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

The ESA released this composite panoramic image showing Philae's surroundings on Comet 67P. To illustrate the lander's orientation, the agency superimposed a sketch of the craft. ESA Rosetta/Philae/CIVA hide caption

toggle caption ESA Rosetta/Philae/CIVA

Engineers at the European Space Agency fear that they won't be able to communicate with the Philae lander after Friday. Here, lander manager Stefan Ulamec (left, in foreground) watches as data confirming the comet landing arrived Wednesday. European Space Agency hide caption

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The Philae lander beamed back images showing one of its three feet on the surface of Comet 67P/Churyumov-Gerasimenko . This photo is compiled from two images; a wider version will be released later Thursday. ESA/Rosetta/Philae/CIVA hide caption

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Europe's Rosetta spacecraft is about to send a lander to comet 67P/Churyumov-Gerasimenko. ESA/Rosetta/NavCam hide caption

toggle caption ESA/Rosetta/NavCam

The Two-Way

Researchers To Attempt Robotic Landing On Comet's Surface

Putting a probe on a comet's surface would be a first for mankind. But it doesn't look like it will be easy.

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