There is abundant evidence that ancient Mars possessed water on its surface. Noachian-age rocks (3.7 to 4.1 billion years old) show evidence for hydrous minerals, valley networks, lakes, and shorelines […]
In June 2015, Mars will swing almost directly behind the sun from Earth’s perspective, and this celestial geometry will lead to diminished communications with spacecraft at Mars. The arrangement of […]
All three NASA orbiters around Mars confirmed their healthy status Sunday after each took shelter behind Mars during a period of risk from dust released by a passing comet. Mars […]
Mars Odyssey GRS/HEND data sets covering the data acquisition period January 1 to March 31, 2014, have now been released, two weeks after the scheduled release date of October 1. […]
NASA’s Mars Odyssey spacecraft has successfully adjusted the timing of its orbit around Mars as a defensive precaution for a comet’s close flyby of Mars on Oct. 19, 2014. The […]
NASA is taking steps to protect its Mars orbiters, while preserving opportunities to gather valuable scientific data, as Comet C/2013 A1 Siding Spring heads toward a close flyby of Mars […]
NASA’s Mars Odyssey spacecraft has tweaked its orbit to help scientists make the first systematic observations of how morning fogs, clouds and surface frost develop in different seasons on the […]