Space ShuttleNASA launches Space Shuttle Endeavour on the longest flight of the shuttle program to date – over 16 and a half days – with the ASTRO astronomy experiment package mounted in the cargo bay. Some astronomical observations on this mission are conducted in tandem with the Hubble Space Telescope. Aboard Endeavour for her eighth flight are Commander Stephen Oswald, Pilot William Gregory, Payload Commander Tammy Jernigan, mission specialists John Grunsfeld and Wendy Lawrence, and payload specialists Ronald Parise and Samuel Durrance.