Live coverage of the countdown and launch of an Atlas 5 rocket with on the sixth flight of the U.S. Air Force’s X-37B spaceplane. Text updates will appear automatically below. Follow us on Twitter.
United Launch Alliance’s live launch broadcast begins at 8:55 a.m. EDT (1255 GMT) Sunday, May 17.
Spaceflight Now members can watch a live view of the pad before the start of ULA’s broadcast. Join now.