The shuttle Atlantis (foreground) sits on Launch Pad A and Endeavour on Launch Pad B at NASA's Kennedy Space Center in Florida. For the first time since July 2001, two shuttles are on the pads at the same time. Endeavour will stand by in the unlikely event that a rescue mission is necessary during Atlantis' upcoming mission to repair the Hubble Space Telescope, targeted to launch Oct. 10, 2008. Credit: NASA/Troy Cryder.
