space
An artist's rendering shows a rocket-powered descent stage lowering the one-ton Curiosity rover to the Mars surface. NASA/JPL-Caltech hide caption
An artists rendition of an interstellar "Bussard Ram-Jet" starship. Adrian Mann hide caption
An image of the Dragon spacecraft, taken earlier today with a thermal camera aboard the International Space Station. Twitter.com/SpaceX hide caption
The Falcon 9 SpaceX rocket lifted off from space launch complex 40 at the Cape Canaveral Air Force Station in Cape Canaveral, Fla., early Tuesday. John Raoux/AP hide caption
SpaceX rocket Falcon 9 at Cape Canaveral in Florida was scheduled to launch Saturday morning, but aborted just before liftoff. Roberto Gonzalez/Getty Images hide caption
This combination picture shows the annular solar eclipse as viewed from Tokyo earlier today. Kazuhiro Nogi /AFP/Getty Images hide caption
A mosaic of images taken in January 2012 shows Opportunity's vista north (left) and northeast (right), in an outcrop known as "Greeley Haven," where the rover spent its fifth Martian winter. The image released by NASA is presented in "false color," to make differences in the landscape easier to see. NASA hide caption