Preston Burch, Hubble Program 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)
Preston Burch, Hubble Program 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)