Mars's Gravity Captures NASA Spacecraft John Roach, for National Geographic News March 10, 2006 <A HREF="http://news.nationalgeographic.com/news/2006/03/0310_060310_mars_orbit.html" target="_blank">http://news.nationalgeographic.com/news/2006/03/0310_060310_mars_orbit.html</A> <img src=http://news.nationalgeographic.com/news/bigphotos/images/060310_mars_orbit_big.jpg>