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This graphic depicts the Mars Climate Sounder instrument on NASA's Mars Reconnaissance Orbiter measuring the temperature of a cross section of the Martian atmosphere as the orbiter passes above the south polar region

Mars Water-Ice Clouds Are Key to Odd Thermal Rhythm

Researchers using NASA's Mars Reconnaissance Orbiter have found that temperatures in the Martian atmosphere regularly rise and fall not just once ...

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Several types of downhill flow features have been observed on Mars. This image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter is an example of a type called 'linear gullies.'

Marks on Martian Dunes May Be Tracks of Dry-Ice Sleds

NASA research indicates hunks of frozen carbon dioxide -- dry ice -- may glide down some Martian sand dunes on cushions of gas similar to miniature ...

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Fresh cluster of impact craters on Mars

NASA Probe Counts Space Rock Impacts on Mars

Scientists using images from NASA's Mars Reconnaissance Orbiter have estimated that the planet is bombarded by more than 200 small asteroids or bits ...

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Dan Johnston, left and David Lehman, right

NASA Mars Orbiters Have New Project Managers

Two NASA spacecraft orbiting Mars, both working long past their original prime missions, have new project managers at NASA's Jet Propulsion ...

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This set of images shows what might be hardware from the Soviet Union's 1971 Mars 3 lander

NASA Mars Orbiter Images May Show 1971 Soviet Lander

Hardware from a spacecraft that the Soviet Union landed on Mars in 1971 might appear in images from NASA's Mars Reconnaissance Orbiter.

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Mission News

  • Sequence of seven images from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter

    Used Parachute on Mars Flaps in the Wind

    Photos from NASA's Mars Reconnaissance Orbiter show how the parachute that helped NASA's Curiosity rover land on Mars last summer has subsequently changed its shape on the ground.

  • Visualization of buried Marte Vallis channels

    NASA Helps See Buried Mars Flood Channels in 3-D

    NASA's Mars Reconnaissance Orbiter has provided images allowing scientists for the first time to create a 3-D reconstruction of ancient water channels below the Martian surface.

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