CAPE CANAVERAL, Fla. — The delay of space shuttle Discovery's launch to the end of the month should not impact the overall schedule for the final missions of NASA's three-orbiter fleet, agency officials said.
A gas leak and a crack on the space shuttle Discovery's external tank forced NASA officials to call off their planned Nov. 5 launch. The earliest Discovery could now lift off is Nov. 30, NASA announced.
If the space shuttle can make the next window that begins Nov. 30, then the following planned mission of the space shuttle Endeavour should be able to launch on time in February, officials said.
The space shuttle is limited in when it can launch by "windows" that open up when conditions are optimum to reach the International Space Station. For Discovery, the current window closes Nov. 8 because of unfavorable sun angles at the station that could cause some parts of the shuttle to overheat while it's docked at the orbital outpost.
The next earliest favorable date to launch is Nov. 30, though space agency officials have not yet decided if Discovery will attempt to blast off that day. [ GRAPHIC: NASA's Space Shuttle From Top to Bottom ]
If the repair work to Discovery's external tank takes longer than roughly three-and-a-half weeks from now, it's possible that the orbiter's STS-133 mission could be pushed into the February 2011 timeslot that is currently earmarked for the shuttle Endeavour's final spaceflight.
If that happens, Endeavour's STS-134 flight could be bumped to sometime in April. NASA has also tentatively scheduled a final flight for the space shuttle Atlantis in June 2011. This third, extra shuttle mission (STS-135) has been approved by Congress and President Obama but still faces review by congressional appropriators later this year.
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