The Space Shuttle Columbia rolls to Launch pad 39A from the Vehicle Assembly Building. Already inside the orbiter's cargo bay is the payload for the upcoming STS-55 flight, the D-2 Spacelab module and Unique Support Structure. This will be the second German-managed Spacelab mission. STS-55 is targeted for liftoff at the end of February.
Owner: NASA on The Commons
Source: Flickr Commons