Clocks in the Kennedy Space Center Launch Control Center have resumed counting down from T-3 hours. The astronauts are boarding the Astrovan and make their way to Launch Pad 39A.
Weather remains favorable, with a 70 percent chance of good 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