Mars, Up Close And Glowing

Mars came its closest to Earth in years last night. The Hubble Space Telescope snapped this image using a series of exposures over 36 hours, when Mars was just 55 million miles away. If this image gets you all fired up, you can discuss Mars with Ray Bradbury and (maybe) Arthur C. Clarke at a just-announced conference next May at UC Riverside. [Hubblesite]