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NASA gave the go-ahead for shuttle managers to fuel Discovery in preparation for a Friday launch after repeated delays.
Bad weather forced Discovery to delay its liftoff to the International Space Station on Thursday.
The new scheduled launch time is 3:04 p.m. Friday.
"The shuttle weather team is calling for a 60 percent chance of acceptable conditions," NASA said.
Thursday's was the latest in a series of delays for the 39th and final voyage for Discovery, the agency's oldest shuttle.
A planned Tuesday liftoff was canceled to fix a glitch to a backup system that controls a main engine.
Before that, the shuttle was expected to blast off Monday, but Discovery was delayed to repair helium and nitrogen leaks in its system.
Discovery's six crew members are scheduled to deliver a pressurized logistics module that will help provide more storage to the space station.
"We've gotten into a configuration now on the space station where we have a lot of stuff and we don't have a lot of space to put it in," said Royce Renfrew, lead space station flight director for the mission.
With 38 voyages to date, Discovery has flown more missions than any other orbiter in the fleet.
It also made history along the way, NASA said.
Discovery flew the first female shuttle pilot, the first African-American spacewalker and the first sitting member of Congress to go to space.
Bad weather forced Discovery to delay its liftoff to the International Space Station on Thursday.
The new scheduled launch time is 3:04 p.m. Friday.
"The shuttle weather team is calling for a 60 percent chance of acceptable conditions," NASA said.
Thursday's was the latest in a series of delays for the 39th and final voyage for Discovery, the agency's oldest shuttle.
A planned Tuesday liftoff was canceled to fix a glitch to a backup system that controls a main engine.
Before that, the shuttle was expected to blast off Monday, but Discovery was delayed to repair helium and nitrogen leaks in its system.
Discovery's six crew members are scheduled to deliver a pressurized logistics module that will help provide more storage to the space station.
"We've gotten into a configuration now on the space station where we have a lot of stuff and we don't have a lot of space to put it in," said Royce Renfrew, lead space station flight director for the mission.
With 38 voyages to date, Discovery has flown more missions than any other orbiter in the fleet.
It also made history along the way, NASA said.
Discovery flew the first female shuttle pilot, the first African-American spacewalker and the first sitting member of Congress to go to space.