NASA's Mars Odyssey orbiter has resumed its science observations and its role as a Mars rover's relay, thanks to a spare part that had been waiting 11 years to be put to use.
NASA's Mars Odyssey orbiter has been taken out of a protective status called safe mode.
In a step toward returning NASA's Mars Odyssey orbiter to full service, mission controllers have tested a spare reaction wheel on the spacecraft for potential use with two other reaction wheels in adjusting and maintaining the spacecraft's orientation.
NASA is busy replanning the future Mars Exploration Program - and we want to hear from you!
NASA has narrowed the target for its most advanced Mars rover, Curiosity, which will land on the Red Planet in August.
NASA's Mars Odyssey orbiter put itself into precautionary standby status June 8 Universal Time, when it detected unexpected characteristics in movement of one reaction wheel.
NASA will host a media teleconference at 9 a.m. PDT (noon EDT) on June 11, to provide a status update on the Aug. 5, 2012, landing of the most advanced rover ever to be sent to Mars.
NASA will host a NASA Social for 25 of its social media fans Aug. 3-5 at the agency's Jet Propulsion Laboratory in Pasadena, Calif., in anticipation of the Curiosity rover's landing on Mars.
NASA-funded research on Mars meteorites that landed on Earth shows strong evidence that very large molecules containing carbon, which is a key ingredient for the building blocks of life, can originate on the Red Planet.
With its daily supply of solar energy increasing, Opportunity has driven off the sunward-tilted outcrop where it spent its fifth Martian winter.
Engineers ran rover-mobility tests on California sand dunes in preparation for operating NASA's Curiosity rover after it lands in Mars' Gale Crater.
MRO has revealed that movement in Mars' sand dune fields occurs on a surprisingly large scale, about the same as in dune fields on Earth.
At 1:31 p.m. EDT, April 27, NASA's Mars Science Laboratory, carrying the one-ton Curiosity rover, became 100 days from its appointment with Mars.
A crater NASA's Mars rover Opportunity drove for years to reach is paying off with evidence about wet environments older than any recorded at sites the rover has seen before.
A Martian dust devil roughly 12 miles high (20 kilometers) was captured whirling its way along the Amazonis Planitia region of Northern Mars on March 14.
One particular mountain on Mars has been beckoning would-be explorers since it was first sighted from orbit in the 1970s.
NASA's Mars Science Laboratory, halfway to Mars, adjusted its flight path for delivery of the one-ton rover Curiosity in August.
A towering dust devil casts a serpentine shadow over the Martian surface in a new image from the high-resolution camera on NASA's Mars Reconnaissance Orbiter.
NASA's Mars Odyssey, the longest-working spacecraft ever sent to Mars, has now been sending home images for 10 years.
NASA' s associate administrator for the Science Mission Directorate, John Grunsfeld, has named former veteran NASA program manager Orlando Figueroa to lead a newly established Mars Program Planning Group (MPPG) tasked to reformulate the agency's Mars Exploration Program.