NASA announced Thursday that the last two Shuttle flights will be delayed with Discovery’s launch going from September 16 to November 1 and Endeavour’s being changed from November 26 to February 29 2011.
The changes were made to allow more time for the fabrication of parts to be sent to the ISS. Congress has already added 600 million dollars to cover Shuttle operations to the end of the fiscal year.
NASA also plans on requesting funding for one more flight of the Shuttle Atlantis which will be on the pad ready for launch as an emergency rescue ship for the Endeavour flight. Since the Columbia accident NASA has had a Shuttle prepped and ready to launch as a rescue ship if an orbiter could not return to Earth.