Photos: Atlas 5 on the pad for X-37B launch

A replay of the United Launch Alliance Atlas 5 rocket launching the classified NROL-55 payload for the National Reconnaissance Office from Vandenberg Air Force Base, California.

The world’s population can now make full use of the latest Global Positioning System satellite launched from Cape Canaveral last month.

United Launch Alliance ground crews are putting the final touches on a Delta 4 rocket scheduled for blastoff Friday evening from Cape Canaveral with a U.S. Air Force communications satellite.