50 years of Nasa space travel

Space shuttle Atlantis is ready to make one last descent to Earth. Atlantis, just like Discovery and Endeavour before it, is being retired.
The orbiter and its crew of four are scheduled to hit the runway at the Kennedy Space Center in Florida just before sunrise on 22-02-2011.
Nasa has been at the forefront of space travel for 50 years after it was created by President Dwight D Eisenhower in 1958.
It has experienced highs and lows and many memorable moments.