NASA - National Aeronautics and Space Administration

STS-121 Flight Day 4 Highlights

STS-121 Flight Day 3 Highlights

STS-121 Flight Day 2 Highlights

STS-121 Flight Day 1 Highlights

Making History

Shooting like a roman candle into Florida's blue sky from Launch Pad 39B, Space Shuttle Discovery kicked off the Fourth of July fireworks with its own fiery display, reflected as well in the nearby wa...

Foam and Debris During Ascent

Images captured during Space Shuttle Discovery's July 4 climb to orbit.

Space Shuttle Discovery: ET Foam

NASA examines small insulation loss.

Launch of Space Shuttle Discovery: STS-121

Discovery lifts off on the Fourth of July!

Success!

In Firing Room 4 of the Launch Control Center, employees wave American flags after the successful launch of Space Shuttle Discovery on mission STS-121. Liftoff occurred at 2:38 p.m. EDT. During the 12...

Space Shuttle Discovery Lifts Off!

Like a roman candle shooting through the blue sky, the launch of Space Shuttle Discovery on mission STS-121 kicks off the fireworks for the U.S. holiday.

Commanded by Steven Lindsey, Dis...

Discovery Stands Ready

Space Shuttle Discovery is bathed in evening light after removal of the rotating service structure at Launch Pad 39B.

Discovery Crew Arrives

STS-121 mission crew land at Kennedy Space Center to prepare for launch day.

STS-121 Crew Readies
in Florida

Crew rehearses countdown before launch.

Discovery at the Pad

The space shuttle rests on launch pad 39B at NASA's Kennedy Space Center, Fla.

Short Trip, Big Milestone

Discovery joins its boosters and tank in the Vehicle Assembly Building.

STS-121 Crew Portrait

Return to Flight Crew Visits the White House

Stacking SRBs

Solid rocket booster stacking for STS-121 is underway at Kennedy Space Center.

Powered Up

Space Shuttle Endeavour is fully powered for the first time in nearly two years.

STS-121 Crew Prepares for Space