STS-125 crew members pose for the traditional portrait after breakfast on launch day.

At NASA's Kennedy Space Center in Florida, STS-125 crew members pose for the traditional portrait after breakfast on launch day. From left are Mission Specialists Andrew Feustel and John Grunsfeld, Pilot Gregory C. Johnson, Commander Scott Altman, and Mission Specialists Megan McArthur, Mike Massimino and Michael Good. The crew is preparing for liftoff aboard space shuttle Atlantis on the STS-125 mission to refurbish and upgrade NASA's Hubble Space Telescope with state-of-the-art science instruments. The payload includes a Wide Field Camera 3, fine guidance sensor and the Cosmic Origins Spectrograph. Atlantis' 11-day flight will include five spacewalks that will expand Hubble's capabilities and extend its operational lifespan through at least 2014. Launch of Atlantis is scheduled for 2:01 p.m. EDT. Photo credit: NASA/Kim Shiflett