It's Late Spring on Mars, and the Frost Hasn't Quite Melted Yet

Just expand this image a little bit and you'll see amazing detail — that's frost forming on ripples of sand, its distinctive wrinkly appearance created by wind whipping along this slope on the inside of a Martian crater. » 1/02/15 5:02pm 1/02/15 5:02pm

One Image That Reveals the Full Wonder of Martian Geology

Mars isn't just an endless stretch of dull red dirt — different parts of the planet's surface are geomorphologically distinct, with some parts boasting dunes, craters, or flood channels, while others feature evidence of avalanches, dust devil trails, and stratified terrain. » 10/14/14 7:00pm 10/14/14 7:00pm

Dunes Let Us Study One Of The Universe's Fastest Geologic Processes

With a gentle rainbow of topographical changes, and the scalloped detail of active dunes, this digital terrain model is pure indulgence for the eyes. It's also part of an ongoing study on using aeolian processes to investigate sedimentation and atmospheric science on Mars. » 5/16/14 12:49pm 5/16/14 12:49pm

Barchan Dunes on Mars

These dunes are a fleet of Star Fleet communicator badges (combadge), flying in formation across the Martian surface. The geomorphology of why this happens has nothing to do with Star Trek or transporter beams, and everything to do with aerodynamics. » 5/02/14 6:21pm 5/02/14 6:21pm

Zumba Crater, Mars

The walls on the sides of Zumba Crater on Mars are so steep, it looks like an eyeball staring back at you from the digital terrain model. The ejecta forms a hill of red and brown around the perfectly circular blue crater floor. » 4/25/14 10:18pm 4/25/14 10:18pm

The Mysterious Honeycomb Structures on Mars

On Mars exists a patchwork of rectangular ridges, a mysterious feature unique to the red planet. While better and better photographs narrow down the plausible theories, we still don't know exactly what created these puzzling structures. » 4/11/14 12:43pm 4/11/14 12:43pm

Erosion in a Martian Crater

This well-preserved crater on Mars features evidence of mass wasting — reoccurring slope linea formation. Material is being eroded from the high-elevation crater lip, forming shifting gullies into the basin below. » 4/04/14 3:45pm 4/04/14 3:45pm

This is all the beautiful space litter left on Mars by NASA's Curiosity…

Four months ago, NASA landed a one-ton, nuclear-powered rover on the Red Planet, scattering the Martian terrain with heaps of debris in the process. Curiosity, upon arrival, shed so much of its Entry Descent & Landing hardware that high resolution images of the planet's surface are still turning up traces of the… » 12/06/12 9:00am 12/06/12 9:00am

NASA will attempt to photograph the Curiosity landing. From an entirely…

As of this posting, we are just 2 days, 12 hours, and thirty minutes away from the Curiosity rover making touchdown on Mars. We're excited. NASA's excited. Even Angry Birds is excited. » 8/03/12 10:15am 8/03/12 10:15am

This gorgeous patch of Mars would be a great place to send future rovers

One of the best ways to learn about a planet's history is to examine its geology, so one of the things scientists look for when sending rovers to Mars is areas on the planet's surface that allow access to multiple layers of diverse and interesting rock types. » 5/03/12 1:52pm 5/03/12 1:52pm

Is the Mars Ocean Hypothesis all wet?

Evidence of Mars' watery past continues to pile up, but details surrounding the extent and duration of the planet's hydrous history remain muddled — just how wet was Mars, really? » 4/11/12 7:30am 4/11/12 7:30am

Holy crap, this Martian dust devil is enormous

Remember a few weeks ago when astronomers spotted that "ghostly snake" of a twister creeping its way across the face of Mars? Well, the windstorm featured up top makes that other storm look like an adorable little dust-up. » 4/04/12 3:50pm 4/04/12 3:50pm

This is HiRISE, the most powerful camera we've ever sent to another…

The University of Arizona's High Resolution Imaging Science Experiment (HiRISE) camera is an incredible piece of equipment. Currently circling the Red Planet aboard NASA's Mars Reconnaissance Orbiter, the instrument is capable of capturing photographs of the Martian surface at unprecedented resolution, averaging about… » 1/11/12 9:15am 1/11/12 9:15am

The Beautiful and Bizarre Dry Ice Pits of Mars

All around the Martian south pole, there are huge deposits of frozen carbon dioxide, better known as dry ice. In this image by NASA's Mars Reconaissance Orbiter, we can see huge dry ice pits... and the mysterious walls that encircle them. » 9/26/11 7:30am 9/26/11 7:30am

New Images Show An Ancient Lake Bed On Mars

It's easy to believe there was water on Mars when you can see the evidence so vividly. The high-resolution camera on board the Mars Reconnaissance Orbiter (known as HiRISE) has finally started sending color images, and the results are startling. In the image to the left, you can see the dark basaltic sand, and… » 10/12/07 7:15pm 10/12/07 7:15pm