" NASA’s first space shuttle to fly since the Columbia disaster will not liftoff until July, a drastic delay that will force mission managers to miss the first of two launch windows this summer.
" Space shuttle officials are now targeting a July 13 launch date for the space shuttle Discovery, after it became clear that lifting off during the current window – which runs from May 22 to June 3 – would be unattainable. The new launch window closes July 31.
" “We’re going to return to flight, we’re not going to rush to flight,” said NASA chief Michael Griffin in a press conference at the space agency’s Washington, D.C. headquarters. “We’re going to do it right.” "
http://www.space.com/missionlaunches/050429_sts114_delay.htmlalso see
http://spaceflight.nasa.gov/shuttle/