Mike Klenlen, the Hubble Deputy Project Manager, speaks during a press conference on the upcoming Hubble Space Telescope servicing mission, Thursday, April 23, 2009, at NASA Headquarters in Washington. Photo Credit: (NASA/Paul. E. Alers)

Ed Weiler, Associate Administrator, Science Mission Directorate at NASA Headquarters, left, looks on at David Leckrone, Hubble Project Scientist, as he speaks during a press conference on the upcoming Hubble Space Telescope servicing mission while Preston Burch and Mike Klenlen, seated right, look on, Thursday, April 23, 2009, at NASA Headquarters in Washington. Photo Credit: (NASA/Paul. E. Alers)

Ed Weiler, Associate Administrator, Science Mission Directorate at NASA Headquarters, seated second from left, speaks during a press conference on the upcoming Hubble Space Telescope servicing mission as David Leckrone, Hubble Project Scientist, Preston Burch and Mike Klenlen, seated right, look on, Thursday, April 23, 2009, at NASA Headquarters in Washington. J.D. Harrington, Public Affairs officer for the Science Mission Directorate looks on at left. Photo Credit: (NASA/Paul. E. Alers)

Ed Weiler, Associate Administrator, Science Mission Directorate at NASA Headquarters, second from left, speaks during a press conference on the upcoming Hubble Space Telescope servicing mission as David Leckrone, Hubble Project Scientist, Preston Burch and Mike Klenlen, seated right, look on, Thursday, April 23, 2009, at NASA Headquarters in Washington. Photo Credit: (NASA/Paul. E. Alers)