From NASA News Services:
"The six astronauts of STS-133 are riding in the Astrovan headed to Launch Pad 39A. The countdown is proceeding smoothly this afternoon for a liftoff at 4:50 p.m. EST. Weather forecasters call for a 90 percent chance of acceptable conditions at launch time. For continuous coverage of the countdown, check out NASA's launch blog at http://www.nasa.gov/mission_pages/shuttle/launch/launch_blog.html."
