Ten Years at Mars: Mars Reconnaissance Orbiter Celebrates a Decade of Discovery

Illustration of Mars Reconnaissance Orbiter (MRO) as it entered orbit ten years ago. Image Credit: NASA/JPL

The Martian rover Opportunity has become famous for its amazing longevity, but it is not the only one; orbiting spacecraft also usually enjoy long lifespans, and today the Mars Reconnaissance Orbiter is celebrating its 10th year exploring […]

'Cauliflower' Silica Formations on Mars: Evidence of Ancient Life?

Image of “cauliflower” silica formations found by the Spirit rover in 2008 near Home Plate in Gusev crater. Do they hold clues to ancient life on Mars? Photo Credit: NASA/JPL-Caltech

Was there ever life on Mars? That is one of the longest-running and most debated questions in planetary science, and while there have […]

Incredible Opportunity: '90-Day Rover' Celebrates 12th Anniversary on Mars

Opportunity examining the rock outcrop called “Private John Potts” on the southern side of Marathon Valley. The rover has just passed its 12th anniversary milestone and is still going strong. Photo Credit: NASA/JPL-Caltech

We’ve all seen the commercials for the Energizer Bunny, which keeps going and going and going. … It just never […]

A Moon Falling Apart: Grooves on Phobos Are a Sign of its Eventual Catastrophic Fate

The unusual grooves on Phobos’ surface, such as those on the left side of this image, are now thought to be caused by tidal stress. The large crater Stickney is in the upper portion of the image. Image Credit: NASA/JPL-Caltech/University of Arizona

Phobos is the largest of Mars’ two tiny moons, but 50 […]

Curiosity Finds First Evidence For Possible 'Continental Crust' on Mars

View of an igneous clast named Harrison, which is embedded in a conglomerate rock in Gale crater, and features elongated light-toned feldspar crystals. This mosaic is a combination of an image from Mastcam with higher-resolution images from ChemCam’s Remote Micro-Imager. Image Credit: NASA/JPL-Caltech/LANL/IRAP/U. Nantes/IAS/MSSS

The Curiosity rover, still roaming in Gale crater, has […]

Muddy Mars: New Evidence for Liquid Water Flows Within Past Million Years

Illustration of debris flows inside Istok crater on Mars, which have provided evidence of large amounts of flowing water and mud in the past. The flows are very similar to ones on Earth in Arctic regions such as Iceland. Image Credit: Nature Communications

The fact that Mars used to have large amounts of […]

Mars Science Treasure Dead Ahead as Opportunity Celebrates 11th Year Alive Roving Martian Mountain

11 Years on Mars! New mountain top view from NASA’s Opportunity rover taken on the day of her 11th anniversary exploring the Red Planet on Sol 3911, Jan. 24, 2015, since Martian touchdown on Jan. 24, 2004. The view from atop Cape Tribulation was taken just after departing the summit and shows the […]

Curiosity Gets Crystal-Rich Martian rock at ‘Mojave’ as First Drill Target of 2015

This view from the wide-angle Hazard Avoidance Camera on the front of NASA’s Curiosity Mars Rover shows the rover’s drill in position for a mini-drill test to assess whether a rock target called “Mojave” is appropriate for full-depth drilling to collect a sample. It was taken on Jan. 13, 2015. Credit: NASA/JPL-Caltech

A […]

Early Results From NASA’s MAVEN Mars Orbiter Provide Clues Pointing to Atmospheric Loss

MAVEN is observing the upper atmosphere of Mars to help understand climate change on the planet. MAVEN entered its science phase on Nov. 16, 2014. Image Credit: NASA/GSFC

NASA’s newest Mars orbiter, MAVEN, has begun its unprecedented mission to unlock the mysteries of Mars’ climate history and determine why the Red Planet lost […]

NASA’s New MAVEN Probe Tantalizes Scientists With Unprecedented First Science Results From Mars

Three views of an escaping atmosphere, obtained by MAVEN’s Imaging Ultraviolet Spectrograph. By observing all of the products of water and carbon dioxide breakdown, MAVEN’s remote sensing team can characterize the processes that drive atmospheric loss on Mars. Credit: University of Colorado/NASA

NASA’s new MAVEN Mars orbiter has taken a series of unprecedented […]