Cape Canaveral scheduled to launch at early Tuesday a.m . ET Tuesday . Discovery has 80 percent chance of acceptable weather for launch . The seven-member crew was boarding the orbiter Monday night on Cape Canaveral 's launch pad 39A . Shuttle to deliver equipment to international space station . Stephen Colbert will remain on the space station as a flight engineer .
Cape Canaveral scheduled to launch at early Tuesday a.m . ET Tuesday . Discovery has 80 percent chance of acceptable weather for launch . Shuttle to deliver equipment to international space station . Stephen Colbert will remain on the space station as a flight engineer .