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    The surface of Mars

    •September 17, 2012
    • In this undated image provided by NASA, Mars Rover Opportunity catches its own late-afternoon shadow in a view eastward across Endeavour Crater on Mars. The rover used a panoramic camera between about 4:30 and 5:00 p.m. local Mars time to record images taken through different filters and combined into this mosaic view. Most of the component images were recorded during the 2,888th Martian day, or sol, of Opportunity's work on Mars, which corresponds to March 9, 2012 on Earth. The view is presented in false color to make some differences between materials easier to see, such as the dark sandy ripples and dunes on the crater's distant floor. Opportunity has been studying the western rim of Endeavour Crater since arriving there in August 2011. (AP Photo/NASA/JPL-Caltech/Cornell/Arizona State University)
    • This image provided by NASA on Thursday, April 26, 2012 shows lava flows in the shape of coils located near the equatorial region of Mars. Analyzing high-resolution images of the region, researchers have determined the area was sculpted by volcanic activity in the recent geologic past. This is the first time such geologic features have been discovered outside of Earth. (AP Photo/NASA)
    • A Martian dust devil roughly 12 miles (20 kilometers) high was captured winding its way along the Amazonis Planitia region of northern Mars on March 14, 2012 by NASA's Mars Reconnaissance Orbiter. (NASA/JPL-Caltech/UA)
    • This image mosaic taken by the Mars Exploration Rover Spirit's panoramic camera shows a new slice of martian real estate southwest of the rover's landing site. The landscape shows little variation in local topography, though a narrow peak only seven to eight kilometres away is visible on the horizon. A circular depression, similar to the one dubbed Sleepy Hollow, can be seen in the foreground. Compared to the Viking and Pathfinder landing sites, the terrain at Gusev Crater, Spirit's landing site, is flat and speckled with a sparse array of rocks. The picture was released by the Jet Propulsion Laboratory in Pasadena, California Janaury 10, 2004.   EDITORIAL USE ONLY (CREDIT : REUTERS/NASA/JPL/Arizona State University/Cornell University/Handout)
    • A view of Eberswalde crater containing a rare case of a martian delta, with well preserved channels which fed the lake in the crater, located in the southern highlands of Mars, seen in this handout photograph acquired by Mars Express at approximately 25S / 326E during orbit 7208 on August 15, 2009 and released September 2, 2011. The delta deposits and channels together provide a clear indication of liquid surface water during the early history of Mars. The images have a ground resolution of about 22 m per pixel. Reuters
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    Mars dust devil

    A Martian dust devil roughly 12 miles (20 kilometers) high was captured winding its way along the Amazonis Planitia region of northern Mars on March 14, 2012 by NASA's Mars Reconnaissance Orbiter. (NASA/JPL-Caltech/UA)

    Close-up views of our neighboring planet.