Working in Tandem

Dwarfed by space shuttle Discovery and with Earth's horizon and the blackness of space providing the…

Spacewalkers at Work

During the second of three spacewalks STS-131 astronauts Rick Mastracchio (left) and Clayton Anderson continued maintenance…

A Day’s Work

During the second spacewalk of the STS-131 mission, NASA astronauts Rick Mastracchio and Clayton Anderson (out…

Upgrading the Station

During the STS-131 mission's first spacewalk, which lasted about 6.5 hours, NASA astronaut Rick Mastracchio helped…

A View of the Main Engines

The Expedition 23 crew photographed this view of the aft portion of space shuttle Discovery, including…

Pitch, Roll

This view of the underside of the crew cabin of the space shuttle Discovery was provided…

Flying Across the Moon

The International Space Station flew across the face of the moon over NASA's Kennedy Space Center…

Discovery Lifts off

An exhaust cloud billowed around Launch Pad 39A at NASA's Kennedy Space Center in Florida as…

3-2-1 Lift Off

Space shuttle Discovery's engines ignited at 6:21 a.m. EDT Monday, April 5, for liftoff of the…

Playing Forward

Edwin P. Hubble--famed astronomer--and basketball star? In fact, Dr. Hubble was both. The University of Chicago…