This picture released on May 26, 2008 by NASA shows a polygonal pattern in the ground near NASA’s Phoenix Mars Lander, similar in appearance to icy ground in the arctic regions of Earth. Phoenix touched down on the Red Planet at 4:53 p.m. Pacific Time (7:53 p.m. Eastern Time) on May 25, 2008, in an arctic region called Vastitas Borealis, at 68 degrees north latitude, 234 degrees east longitude. This is an approximate-color image taken shortly after landing by the spacecraft’s Surface Stereo Imager, inferred from two color filters, a violet, 450-nanometer filter and an infrared, 750-nanometer filter. (AFP/Getty Images)
This handout photograph provided by NASA/JPL-Caltech/University of Arizona shows the Phoenix Mars Lander decending on May 25, 2008 to the surface of Mars in this image released May 27, 2008. (AFP/Getty Images)
This photo provided by NASA/JPL-Caltech/University of Arizona, a US flag and a DVD containing a message for future explorers of Mars, science fiction stories and art about the planet and the names of 250,000 people sit on the deck of the Phoenix Mars Lander on May 26, 2008 on Mars. (AFP/Getty Images)
