Space shuttle Discovery rolls out of Orbiter Processing Facility 3 to head to the Vehicle Assembly Building in the background.

Space shuttle Discovery rolls out of Orbiter Processing Facility 3 at NASA's Kennedy Space Center in Florida to head to the Vehicle Assembly Building (in the background). First motion was at 2:30 p.m. EST. In the VAB, Discovery will be attached to its external fuel tank and twin solid rocket boosters. After additional preparations are made, the shuttle will be rolled out to Launch Pad 39A for a targeted launch to the International Space Station on Feb. 12. Photo credit: NASA/Jim Grossmann