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The Kelly brothers have become key to figuring out how to prepare for and protect the human body during lengthy trips in space

Astronaut Scott Kelly will try something no American has ever done before, while his twin, retired astronaut Mark Kelly, spends the mission on Earth. As NASA looks towards an eventual three-year long round trip to Mars, the Kelly brothers have become key to figuring out how to prepare for and protect the human body during lengthy trips in space. Don Dahler reports.

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First pictures from the space-probe clinging to the surface of a comet have been released. The Philae probe beamed them back to Earth early Thursday morning

First pictures from the space-probe clinging to the surface of a comet have been released. The Philae probe beamed them back to Earth early Thursday morning. The lander bounced at least twice during the landing, but scientists say it is now stable and can start gathering data. NASA Astronaut John Grunsfeld joins CBSN with more on what kind of information will be collected.

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