The US space shuttle Atlantis is scheduled to blast off from Florida on a mission to deliver spare parts to the International Space Station (ISS). Lift-off is planned for 1928 GMT today from the Kennedy Space Center near Cape Canaveral.<br/>The mission is set to include three spacewalks to store hardware on the outside of the orbiting outpost. It is dedicated to building up the store of replacement parts on the space station, which is nearing the completion of its construction phase. The six astronauts will spend the US Thanksgiving holiday in orbit. They will return to Earth with a seventh crew member, Nicole Stott, who has been living at the space station for nearly three months. The 11-day space outing will be the fifth and last shuttle mission for 2009.<br/>