(3)On April 15 and 18, the Spirit rover captured images of "dust devils" scooting across the ground inside Gusev Crater on Mars. Click here(1) (or the photo) to view an animation of the whirlwinds in action. View a second animation here(2).
Credit: NASA/JPL

1. http://www.nasa.gov/images/content/113333main_1114050279_5705-1_dd_enhanced_456-A462R1.gif
2. http://www.nasa.gov/images/content/113334main_1114050279_5705-2_dd_enhanced_459-A462R1.gif
3. http://www.nasa.gov/images/content/113333main_1114050279_5705-1_dd_enhanced_456-A462R1.gif