Orbiting satellites, two hardy rovers, and a lander near the north pole have been sending back exciting evidence that the red planet may have once hosted oceans, rivers, and lakes of liquid water.
Get the latest news and images from this suite of Mars-based missions, and catch up on the compelling evidence for the planet's watery history—including hints that life may still be lurking below the surface.
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PHOTOS:
 | Mars Lander Finds Ice, NASA Says (June 20, 2008) It's a first. "Perfect evidence" of water ice—a key ingredient for life—has been found on Mars, NASA says. |
 | PHOTOS: Mars Lander Takes First ''Self Portraits'' (May 27, 2008) See historic photos transmitted by the Mars Phoenix Lander from the red planet. |
 | Panorama Marks Mars Rover's 4th Year (January 30, 2008) Colorful mosaics from inside Victoria Crater herald the four-year anniversary of the rover Opportunity's arrival on the red planet. |
 | Ice Lake Found on Mars (August 2, 2005) Life on Mars? Who knows? Ice on Mars? Most definitely—and now we've got more cold, hard evidence. |
 | "Frozen Sea" Seen on Mars (February 23, 2005) Martian pack ice is clearly visible for the first time, scientists say. It may be the best evidence yet of past seas, and it adds credence to the idea of life on Mars. |
NEWS:
 | Mars Lander Stymied by Ice; Like "Scraping a Sidewalk" (July 11, 2008) The Phoenix Mars lander is finding it difficult to break ice for analysis and has a worrying short circuit. |
 | Mars Soil Resembles Veggie-Garden Dirt, Lander Finds (June 26, 2008) "You might be able to grow asparagus in it," said one scientist, based on preliminary findings of soil composition and pH from the Phoenix Mars lander. |
 | On "Dream" Terrain, Mars Lander Readies for Experiments (May 26, 2008) After the Phoenix Mars Lander's ideal touchdown, researchers are preparing its many instruments for the first surface-based study of the red planet. |
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