Space shuttle Atlantis moved three miles closer to space Tuesday March 31 as workers rolled it to Launch Pad 39A at NASA's Kennedy Space Center in Florida. The trip from the Vehicle Assembly Building took about six hours. Technicians will spend the next several weeks readying Atlantis for its targeted May launch on its STS-125 mission to service NASA's Hubble Space Telescope. A crew of seven astronauts will fly aboard the shuttle with a specialized set of tools and equipment to install several new components into Hubble.