NASA Tech Aims for Precise Landings on Mars (Video)

Getting a robotic spacecraft to nail a pinpoint landing is still just a dream for engineers, but a new technology could make it easier to reach distant destinations with better precision. The new Mars landing technology, which is being co-developed by scientists at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, and the University of Texas at Austin, compares pictures of the ground below to images already stored in the spacecraft's computer, to figure out how close to get to