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Expedition 42 Soyuz Rocket Rolls Out

November 21, 2014

The Soyuz TMA-15M spacecraft is rolled out to the launch pad by train on Friday, Nov. 21, 2014 at the ...

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Balance Mass Challenge
Mars Balance Mass Challenge

The Mars Balance Mass Challenge seeks design ideas for small science and technology payloads that could potentially provide dual purpose as ejectable balance masses on spacecraft entering the Martian atmosphere.

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Latest ScienceCast
How to Land on a Comet YouTube Video

ESA's Rosetta spacecraft is about to attempt something "ridiculously difficult" - landing a probe on the surface of a speeding comet.

Watch our latest ScienceCast: How to Land on a Comet