Hubble Servicing Mission Date Set
NASA Internal Memo: Hubble Space Telescope SM4 Mission Scheduled for 11 September 2008
http://www.spaceref.com/news/viewsr.html?pid=22996
NASA Internal Memo: Hubble Space Telescope SM4 Mission Scheduled for 11 September 2008
http://www.spaceref.com/news/viewsr.html?pid=22996