Space shuttle Discovery atop a 747 carrier jet departs the Kennedy Space Center, Tuesday, April 17, 2012, in Cape Canaveral, Fla. Discovery is being transported to the Smithsonian National Air and Space Museum in Washington. (AP Photo/John Raoux)
NASA has announced that the launch of the space shuttle Endeavour, originally scheduled for this afternoon, has been pushed back at least 48 hours. Via Twitter, the space folks pointed to a problem with the "Auxiliary Power Unit 1 heaters." But we figure the royal wedding is probably to blame somehow.