An international crew of volunteer astronauts will take their first mock "Mars-walk" today (Feb. 14), kicking their unprecedented 500-day simulation of a mission to the Red Planet into a whole new gear. Full story
NASA scientists and their colleagues are now proposing corporate financing for a human mission to Mars. This raises the prospect that a spaceship named the Microsoft Explorer or the Google Search Engine could one day go down in history as the first spaceship to bring humans to the Red Planet. Full story
Rachel Maddow reports on three stories which might seem a little sad if the robots and planets involved are anthropomorphized.
Scientists are impressed with the flood of data beamed back by NASA's most advanced Mars orbiter. Full story
Click through amazing Red Planet images selected by the team behind the high-resolution camera on NASA's Mars Reconnaissance Orbiter.
NASA on Thursday outlined a rescue plan to try to free the rover Spirit, which has been bogged in a sand trap on the red planet for half a year. The risky operation is expected to last several months. Full story
Aug. 1: Dr. Jim Zimbelman from the National Air and Space Museum explains that the discovery of water on Mars may be the first step toward the discovery of life on the red planet.
Mars500 crew member Diego Urbina takes a walk on a make-believe stretch of the Red Planet.
A worker at NASA's Jet Propulsion Laboratory digs simulated Martian soil in an effort to replicate the Spirit rover's situation on the Red Planet.
NASA's Mars Exploration Rovers began operations on the Red Planet's surface in 2004.
The Mars Science Laboratory, due for launch in 2011, is much larger than the Mars rovers that landed on the Red Planet in 2004 — as shown in this side-by-side artist's conception.
