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CAPE CANAVERAL, Fla. — NASA’s last space shuttle countdown is underway, but lousy weather may delay Friday’s launch attempt.
There’s a 60 percent chance that rain or thunderstorms will postpone the liftoff of Atlantis, shuttle weather officer Kathy Winters said Tuesday. The weather improves with each passing day, as the launch time gets slightly earlier.
Friday’s launch is set for 9:26 a.m. MDT.
The countdown clocks started ticking Tuesday afternoon. The four astronauts assigned to the 12-day flight arrived at Kennedy Space Center on Monday.
Atlantis is making one final supply run to the international space station before retiring. As many as 1 million spectators are expected to jam the Cape Canaveral area for the historic send-off.
