Russia's space agency has signed a contract with Gregory Olsen, in a deal that would make the U.S. millionaire scientist only the third tourist to visit the international space station.

NASA is featuring a prelaunch webcast and extensive launch day coverage of the Space Shuttle Discovery's Return to Flight mission (STS-114). Prelaunch coverage starts at 2:30 p.m. EDT, July 10, and the launch is at 3:51 p.m. EDT, Wednesday, July 13.