On January 24, 2004, NASA's Mars rover Opportunity is scheduled to land on a Martian plain in search of evidence for water.
The European Space Agency says its Mars Express orbiter has revealed the presence of water ice at the red planet's southern polar cap.
Missions offer clues in hunt for new worlds
The European Space Agency's Mars Express has sent back stunning high-resolution images of the planet's massive canyon, Valles Marineris.
Landing on Mars was the first success. Now comes the fun of discovery with Spirit's on-board instrumentation.
Master watchmaker Garo Anserlian is perfecting a timepiece for hundreds of Earthlings bound to Mars' irregular day.
"Scientists have a crush on Mars, and it's hard not to look only for things we want to see," says Mars Exploration Rover scientist, John Grant.
Traces of carbonate minerals showed up in Spirit's first survey of the site with its infrared sensing instrument, known as Mini-TES.
Mars scientists are asking students from around the world to send in rocks to compare to the ones found on the red planet.
While their peers sweat out their next quiz, high school students Courtney Dressing and Rafael Morozowski are sweating out the Mars mission.
NASA Administrator Sean O'Keefe today announced plans to name the landing site of the Mars Spirit Rover the Columbia Memorial Station.
Jan. 3, 2004, saw a celebration worthy of a second New Year's Eve as NASA's Mars Exploration Rover Spirit reached the surface of Mars and signaled that it was safe.
Spirit's landing site may be a dried-up lake bed
If getting to Mars is hard, landing there is even harder
The red planet may be emerging from an icy recent past› View This Video
On the phone, tones can signal a connection. On paper, they can add shape and dimension. On Mars, they can do both.
Images of numerous eroded gullies.
NASA engineers went to the edge of a dry lakebed in California to test navigation software aboard a prototype Mars rover.
Engineers designing wheels for the Mars Exploration Rovers had a tall order to fill.
A sophisticated imaging instrument aboard each Mars Exploration Rover will bring Mars into focus for scientists on Earth.