Operators of NASA's Mars Reconnaissance Orbiter are resuming use of the mission's highest resolution camera following a second precautionary shutdown in two weeks.
Observations from NASA's Mars Reconnaissance Orbiter have revealed possible flowing water during the warmest months on Mars.
NASA will host a news briefing on Thursday, Aug. 4, at 11 a.m. PDT (2 p.m. EDT) about a significant new Mars science finding.
NASA's Mars Reconnaissance Orbiter has discovered the total amount of atmosphere on Mars changes dramatically as the tilt of the planet's axis varies.
NASA's versatile Mars Reconnaissance Orbiter, which began orbiting Mars five years ago on March 10, has radically expanded our knowledge of the Red Planet and is now working overtime.
A new color view from NASA's Mars Reconnaissance Orbiter catches the rover Opportunity at work beside a football-field-size crater which the rover will soon leave behind.
Rocks on Mars dug from far underground by crater-blasting impacts are providing glimpses of one possible way Mars' atmosphere has become much less dense than it used to be.
Hearty thoughts are prompted by the image of a crater in the Arabia Terra region of Mars, taken by the Conext Camera on NASA's Mars Reconnaissance Orbiter.
Sand dunes in a vast area of northern Mars long thought to be frozen in time are changing with both sudden and gradual motions, according to research using images from a NASA orbiter.
NASA's Mars Reconnaissance Orbiter has photographed the Mars Exploration Rover Opportunity beside a crater where the rover will spend the seventh anniversary of its landing.
NASA's Mars Opportunity rover is getting important tips from an orbiting spacecraft as it explores areas that might hold clues about past Martian environments.
Thousands of new Mars images from 340 observations by the highest resolution camera orbiting the Red Planet include scenes of rimless pits, mud volcanoes and other features.
Light-colored mounds of a mineral deposited on a volcanic cone more than three billion years ago may preserve evidence of one of the most recent habitable microenvironments on Mars.
Images from NASA's Mars Reconnaissance Orbiter implicate that carbon-dioxide frost, rather than water, is causing fresh flows of sand on some of the planet's dune gullies.
In preparation for NASA's next rover landing on the Red Planet, one Mars year away, an instrument studying the Martian atmosphere from orbit has begun a campaign.
NASA's Mars Reconnaissance Orbiter resumed observing Mars with its science instruments on Sept. 18, recovering from an unplanned reboot of its computer three days earlier.
NASA's Mars Reconnaissance Orbiter put itself into a precautionary standby mode after experiencing a spontaneous computer reboot on Sept. 15.
The most powerful telescopic camera ever to orbit Mars reveals a fresh crater, an ice mound, climate-recording layers and many other views in 314 newly released observations.
NASA's Mars Reconnaissance Orbiter has a new project manager: Phil Varghese, who has managed another veteran NASA Mars mission – the Mars Odyssey orbiter – since 2004.
Minerals in northern Mars craters seen by two orbiters suggest that a phase in Mars' early history with conditions favorable to life occurred globally, not just in the south.