08.18.09 - Today marks the 2,000th Martian day, or sol, of what was initially planned as a 90-sol mission on Mars for NASA's Spirit rover.
08.21.09 - A second, lighter-weight test rover has entered the testing setup at JPL where rover team members are assessing strategy for getting Spirit out of soft soil where it is embedded on Mars.
08.10.09 - NASA's Mars Rover Opportunity is investigating a metallic meteorite the size of a large watermelon that is providing researchers more details about the Red Planet's environmental history.
08.13.09 - Mars rover team members are planning a long-duration experiment with the test rover at JPL beginning next week.
08.12.09 - The high-resolution camera on NASA's Mars Reconnaissance Orbiter has returned a dramatic oblique view of the Martian crater that a rover explored for two years.
08.10.09 - NASA's Mars Reconnaissance Orbiter has been restored to full operations, making intensive science observations of Mars, four days after it unexpectedly switched to its backup computer.
08.07.09 - NASA's Mars Reconnaissance Orbiter is in safe mode, a precautionary standby status, and in communications with Earth after unexpectedly switching to its backup computer on Thurs. Aug. 6.
08.07.09 - A review on Aug. 6 of test results to date yielded a decision to conduct further checkouts in an augmented testing set-up on Earth.
07.31.09 - The Opportunity rover has eyed an odd-shaped, dark rock, about 0.6 meters (2 feet) across on the surface of Mars, which may be a meteorite.
07.21.09 - A live videocast and chat from NASA's Jet Propulsion Laboratory, Pasadena, Calif., will give viewers a chance to ask questions of rover team members working to get Spirit rolling again.
07.14.09 - Scientists have combined a trio of shots taken seconds apart through different colored filters to create a special-effects portrait of a moving dust devil on Mars.
07.08.09 - The Mars Exploration Joint Initiative will provide a framework for the two agencies to define and implement their scientific, programmatic and technological goals at Mars.
06.22.09 - NASA's long-lived Mars Odyssey spacecraft has completed an eight-month adjustment of its orbit.
06.09.09 - NASA's Mars Reconnaissance Orbiter is examining Mars again with its scientific instruments after successfully transitioning out of a precautionary standby mode triggered by an unexpected June 3 rebooting of its computer.
06.04.09 - NASA's Mars Reconnaissance Orbiter is in safe mode and in communications with Earth after an unexpected rebooting of its computer.
05.07.09 - NASA released an interactive, 3-D photographic collection of the International Space Station and a model of the next Mars rover.
05.11.09 - The five wheels that still rotate on NASA's Mars Exploration Rover Spirit have been slipping severely in soft soil during recent attempts to drive, sinking the wheels about halfway into the ground.
04.20.09 - After NASA's Mars Exploration Rover Spirit had a bout of temporary amnesia on Friday, April 17 it rebooted its computer.
04.15.09 - Heading into a period of the Martian year prone to major dust storms, the team operating NASA's twin Mars rovers is taking advantage of eye-in-the-sky weather reports.
04.14.09 - The parachute for NASA's Mars Science Laboratory passed flight-qualification testing in March and April 2009 inside the world's largest wind tunnel, at NASA Ames Research Center, Moffett Field, Calif.