Atlantis at the Kennedy Space Center at Cape Canaveral, Fla. on July 7, 2011

Atlantis astronauts boarding their transport on July 8

NASA managers watch from the Firing Room Four of the Launch Control Center.

The external fuel tank floats away from Atlantis

Atlantis flies over the Bahamas

Atlantis Commander Chris Ferguson (left) and Pilot Doug Hurley take a pause

The International Space Station and Atlantis (right) orbit Earth

Astronaut Ron Garan checks out his pistol grip tool in the International Space Station

Astronaut Ronald Garan leaves the Quest airlock on the International Space Station

Astronaut Mike Fossum carries a Robotics Refueling Mission payload

Earth's airglow is seen as a thin line above Earth's horizon

Sandy Magnus gets one last visit to the Cupola on board the Space Station

Atlantis lands on July 21, 2011 at Kennedy Space Center

Atlantis is towed into its hangar at the Orbiter Processing Facility July 21 Thank You