Browse Archive
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NASA Announces News Briefing on Mars Orbiter Science Finding
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.
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NASA Orbiter Reveals Big Changes in Mars' Atmosphere
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.
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Prolific NASA Orbiter Reaches Five-Year Mark
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.
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Color View from Orbit Shows Mars Rover Beside Crater
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.
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Some of Mars' Missing Carbon Dioxide may be Buried
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.
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Happy Valentine's Day from Mars
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.
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Northern Mars Landscape Actively Changing
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.
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Rover Will Spend 7th Birthday at Stadium-Size Crater
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.
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NASA Spacecraft Provides Travel Tips for Mars Rover
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.
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Pits, Flows, Other Scenes in New Set of Mars Images
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.
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Silica on a Mars Volcano Tells of Wet and Cozy Past
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.
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Study Links Fresh Mars Gullies to Carbon Dioxide
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.
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Atmosphere Checked, One Mars Year Before a Landing
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.
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Orbiter Resumes Science Observations
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.
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Team Restoring Mars Orbiter After Reboot
NASA's Mars Reconnaissance Orbiter put itself into a precautionary standby mode after experiencing a spontaneous computer reboot on Sept. 15.
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Hundreds of New Views from Telescope Orbiting Mars
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.
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New Project Manager for Mars Reconnaissance Orbiter
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.
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New Clues Suggest Wet Era on Early Mars Was Global
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.
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Detailed Martian Scenes in New Images from Mars Orbiter
Six hundred recent observations of the Mars landscape from an orbiting telescopic camera include scenes of sinuous gullies, geometrical ridges and steep cliffs.
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NASA Orbiter Penetrates Mysteries of Martian Ice Cap
Data from NASA's Mars Reconnaissance Orbiter have helped scientists solve a pair of decades-old mysteries and provided new information about climate change on Mars.