NASA's next Mars rover, Curiosity, will shoot a laser at rocks and patches of soil with enough power to generate a flash revealing each target's atomic ingredients.
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.
NASA's Mars Odyssey, which launched in 2001, will break the record Wednesday for longest-serving spacecraft at the Red Planet.
By the middle of next week, NASA's Mars Odyssey orbiter will have worked longer at Mars than any other spacecraft in history.
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.
More than one million people have watched assembly and testing of NASA's next Mars rover via a live webcam since it went online in October.
As it explores a region of Mars, NASA's rover Curiosity will monitor temperatures, winds, humidity and other environmental variables using tools supplied by Spain.
NASA's Mars Exploration Rover Opportunity has visited and photographed two craters informally named for the spacecraft that carried men to the moon 41 years ago this week.
A camera installed this month on the robotic arm of NASA's next Mars rover will do close-up inspections for clues to Martian environments, but it can look far away, too.
The new project manager for the longest-working spacecraft currently active at Mars, NASA's Mars Odyssey, has a long track record himself.
NASA's Mars Odyssey orbiter put itself into a safe standby mode on Wednesday, July 14, and the mission team has begun steps designed to resume the spacecraft's science and relay operations.
A camera aboard NASA's Mars Odyssey spacecraft has helped develop the most accurate global Martian map ever.
A tool newly delivered from Los Alamos National Laboratory for NASA's Mars rover Curiosity will zap Martian rocks with a laser to learn the rocks' makeup.
One of the experiments on NASA's Mars Science Laboratory mission will measure the natural radiation environment to aid plans for future human missions.
A suite of instruments to analyze samples of Martian rocks and soil for chemistry relevant to life is being readied in Maryland for NASA's next Mars rover, Curiosity.
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.
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.
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.