The Orion spacecraft will replace the Space Shuttle as a part of the Constellation program, an effort to gain proficiency and experience operating away from Earth's environment and to land human explorers on the moon by 2020. The Orion will carry four to six astronauts and will be the NASA's primary vehicle for manned spaceflight missions. Orion's first scheduled flight will be in September 2014.
NASA's journey into the universe
NASA's Mars Reconnaisance Orbiter spotted ice just below the surface that was exposed by fresh meteor crashes, not far from where the Viking 2 Lander looked in 1976.
It'll cost an extra $3 billion a year to keep a viable program aloft, a review panel says.
A panel moves closer to recommending where NASA should fly next, and how.
Column: Looking at hills and valleys on Earth, scientists spot clues on how life affects the land.