Astronauts Prepare for Shuttle Launch

The Shuttle Discovery's crew is back at the Kennedy Space Center.

They're preparing for another launch attempt scheduled for Thursday.

It's been three and a half months since the flight was put on hold because of cracks in the ships external tank. Officials say it's taken this long to repair the shuttle.

If the mission is a go, the shuttle will launch on its 39th and final mission Thursday at 3:50 in the afternoon.

Discovery will carry six astronauts and a humanoid robot, along with a full load of supplies, to the International Space Station.