Pegasus launch rescheduled Published June 26, 2013 By 030613 VANDENBERG AFB, Calif. -- The launch of an Orbital Sciences Corporation Pegasus XL rocket carrying a NASA solar observatory satellite has been rescheduled to 7:27 p.m. PDT Thursday. The rocket is scheduled to launch from an L-1011 aircraft, which is slated to take off from the flight line here at 6:27 p.m. PDT. The launch was originally scheduled for Wednesday, but was postponed because of an issue with the base electrical power architecture. "The piece of equipment that affected the launch is being fabricated in Los Angeles and will be delivered to the base today," said Lt. Col. Burton Catledge, 2nd Range Operations Squadron commander. "The part will be installed, followed by a complete operations check. We won't launch until all systems go, as safety is our number one priority on the range." The 30th Space Wing will provide launch permission, range safety, area clearing and weather support for the launch. The launch decision authority for this mission is Col. Keith Balts, 30th Space Wing commander.