Traffic Jam Causes Launch Delay

The launch of Endeavour STS-134 has been delayed because of "traffic." NASA announced a targeted launch date for 3:47 p.m. EDT on Friday, April 29. This helps avoid a conflict with a Russian Progress supply vehicle scheduled to launch April 27 and arrive at the station April 29. A meeting will be held on April 19 to evaluate the launch schedule and the official launch date will be determined at the conclusion of that meeting.