NASA is targeting 4:50 p.m. EST on Thursday, Feb. 24, for the launch of space shuttle Discovery's STS-133 mission to the International Space Station. The liftoff of shuttle Endeavour's STS-134 flight is planned for 7:48 p.m. EDT on April 19, from NASA's Kennedy Space Center in Florida.
The target dates were selected Thursday during the Space Shuttle Program's weekly Program Requirements Control Board meeting.
NASA sets official launch dates for each shuttle mission following agency Flight Readiness Reviews, which typically occur about two weeks prior to launches. All target launch dates are subject to change.
The target dates were selected Thursday during the Space Shuttle Program's weekly Program Requirements Control Board meeting.
NASA sets official launch dates for each shuttle mission following agency Flight Readiness Reviews, which typically occur about two weeks prior to launches. All target launch dates are subject to change.
| Launch | Assembly | Launch | Element(s) |
| Jan. 20, 2011 | H-II Transfer Vehicle (HTV) | HTV2 | Logistics and resupply |
| Jan. 28, 2011 | 41P | ISS Progress 41 | Logistics and resupply |
| Feb. 24, 2011 | ULF5 | Discovery | EXPRESS Logistics Carrier 4 (ELC4) Permanent Multi-Purpose Module (PMM) |
| Feb. 15, 2011 | ATV-2 | Ariane 5 | Logistics and resupply |
| March 29, 2011 | 26S | Soyuz TMA-21 | Crew transport |
| April 19, 2011 | ULF6 | Endeavour | EXPRESS Logistics Carrier 3 (ELC3)Alpha Magnetic Spectrometer (AMS) |
| December 2011 | 3R | Russian Proton | Multipurpose Laboratory Module with European Robotic Arm (ERA) |
