12.23.10 - NASA's Mars Exploration Rover Opportunity will spend a few weeks investigating a football-field-size crater informally named "Santa Maria."
12.22.10 - 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.
12.16.10 - 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.
12.15.10 - NASA's Mars Odyssey, which launched in 2001, will break the record Wednesday for longest-serving spacecraft at the Red Planet.
12.09.10 - By the middle of next week, NASA's Mars Odyssey orbiter will have worked longer at Mars than any other spacecraft in history.
12.01.10 - 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.
11.30.10 - 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.
11.30.10 - 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.
11.18.10 - 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.
11.16.10 - 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.
10.15.10 - The new project manager for the longest-working spacecraft currently active at Mars, NASA's Mars Odyssey, has a long track record himself.
07.20.10 - 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.
07.23.10 - A camera aboard NASA's Mars Odyssey spacecraft has helped develop the most accurate global Martian map ever.
09.21.10 - 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.
11.09.10 - One of the experiments on NASA's Mars Science Laboratory mission will measure the natural radiation environment to aid plans for future human missions.
10.08.10 - 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.
10.31.10 - 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.
10.29.10 - 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.
09.20.10 - 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.
09.17.10 - NASA's Mars Reconnaissance Orbiter put itself into a precautionary standby mode after experiencing a spontaneous computer reboot on Sept. 15.