Scar on Mars

Another photo from Mars. This time taken with the Mars Express orbiter. This is an elongated crater measuring about 50 miles long and 15 miles wide at its widest point.

Valley at the north pole of Mars

Photo from the Mars Odyssey spacecraft of the valley Chasma Boreale ("northern chasm") near the north pole of Mars. This photo is stitched together from a combination of photos taken by the spacecraft between 2002 and 2005.

Click on the photo to see it enlarged. I've downloaded it for desktop wallpaper.

Another awesome Martian avalanche

This is amazing! The HiRISE camera on the Mars Reconnaissance Orbiter caught another avalanche on Mars.

Dunes of Mars

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From the NASA website:

Dunes of sand-sized materials have been trapped on the floors of many Martian craters. This is one example, from a crater in Noachis Terra, west of the giant Hellas impact basin. The High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter captured this view on Dec. 28, 2009.

The dunes here are linear, thought to be due to shifting wind directions. In places, each dune is remarkably similar to adjacent dunes, including a reddish (or dust colored) band on northeast-facing slopes. Large angular boulders litter the floor between dunes.

Martian south pole

Photo near the Martian south pole taken by the HiRISE camera on the Mars Reconnaissance Orbiter.

Victory, Victoria!

Very cool picture of the crater Victoria taken by the HiRISE camera on Mars Reconnaissance Orbiter. Click on the blog link above for more information about the crater.

Note: on the far left of the picture, you can see wheel tracks from the Mars rover Opportunity which spent a year exploring the crater.