How difficult is it to land on a comet?
Watch the trailer of the movie where ESA astronaut Alexander Gerst, using the weightless environment of the International Space Station, performs a demonstration of how ESA’s Rosetta mission will attempt to put the Philae lander on the surface of the comet. The full movie is now available here.
Demonstrating Rosetta’s Philae lander on the Space Station (short version)
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