The shuttle landed at Kennedy Space Center this afternoon, after a 13 day construction mission to the international space station.
On the second landing opportunity of the day, the shuttle glided back to Kennedy Space Center.
The gusty winds that caused concern earlier in the afternoon, calming enough to allow Discovery to touch down with no problems.
"We had a very successful mission. We are very proud that we were able to bring up the s6 truss, the final power segment for the International Space Station," said Discovery Commander, Lee Archambault.
Over the past 13 days astronauts brought the International Space Station to full power.
Unfurling the last set of solar arrays that will allow the orbiting outpost to increase its crew from three to six this spring.
"We are really excited about the project that you're doing," said President Barack Obama.
The crew also took time out to talk to the new president, a man that will help decide if the shuttle program should receive additional funding to keep flying past the current 2010 retirement date.
The president and some school children were also able to have a little fun with the crew.
"Now, can i ask you a question? Were you tempted to cut your hair shorter while you were up there, or do you -- is it fun in weightlessness?" asked Obama.
That astronaut, Sandra Magnus caught a ride home on discovery after spending the past four and a half months on board the ISS.
The next shuttle launch is scheduled for May.