René Arriëns is one of the last to see astronauts before they fly.› View This Video
Take a look behind the scenes at NASA's Return to Flight.
Susan Johnson explains the work life of a Space Shuttle Main Engine safety manager.› View This Video
Workers at Johnson Space Center's Neutral Buoyancy Lab train astronauts to spacewalk.
Technician Chuck Jones explains how his team will "provide the ride."› View This Video
Lisa Campbell installs sensors deep inside Space Shuttle Discovery's wing.› View This Video
The 2004 astronaut candidates learn what it takes to be a space explorer.
Venture behind the scenes as Shuttle orbiter Discovery goes through an intensive overhaul.› View This Video
The NASA Extreme Environment Mission Operations program provides an underwater analog to the experience of living in space.
Inside the Orbiter Processing Facilities, engineers are working hard to get NASA's three orbiters ready for return to flight› View This Video