Space shuttle cleared to land, loose object poses no risk (AFP)

US space shuttle Discovery's aft section as seen from the International Space Station (ISS) on June 3, 2008. Astronauts on the space shuttle Discovery have spotted an unidentified object floating behind the craft, as well as a bump on the shuttle rudder.(AFP/NASA) AFP - The US shuttle Discovery was cleared on Friday to return to Earth after a successful mission to deliver and open Japan's first space laboratory at the International Space Station.