But American astronaut Jerry Ross has broken a record after being the first person to be launched into space seven times.
Atlantis is on a mission to supply the International Space Station with a 13-metre long piece of steel that will form the station's "backbone".
Last minute hitches
But Nasa technicians managed to fix the problems before launching the shuttle with just 11 seconds to spare.
Forty-five more shuttle missions are needed to deliver all the parts to make the international space station complete.