History with the launch on Independence Day Space Shuttle Discovery with a fiery blaze.

Making history with the first-ever launch on Independence Day, Space Shuttle Discovery on mission STS-121 lifts off Launch Pad 39B beneath it with a fiery blaze from the solid rocket boosters. In the background, clouds build over the Atlantic Ocean. During the 12-day mission, the STS-121 crew of seven will test new equipment and procedures to improve shuttle safety, as well as deliver supplies and make repairs to the International Space Station. Landing is scheduled for July 16 or 17 at Kennedy's Shuttle Landing Facility. Photo credit: NASA/Regina Mitchell-Ryall & Don Kight