Discovery's originally scheduled liftoff date was February 12. It was then delayed until February 27, but was then delayed indefinitely on February 20 after NASA discovered an issue with the hydrogen control valves.
Discovery's original proposed launch was for July of 2008. Later it was changed to December 4, 2008. The next change scheduled the liftoff date for February 12, 2009. It was then delayed until February 27, but was then delayed indefinitely on February 20 after NASA discovered an issue with the hydrogen control valves.
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originally scheduled liftoff date was February 12.
original proposed launch was for July of 2008. Later it was changed to December 4, 2008. The next change scheduled the liftoff date for February 12, 2009.