Photos: More shots of Delta 4 liftoff

Riding a half-million pounds of thrust, a Minotaur 4 rocket fired off a launch pad in Virginia, surpassed the speed of sound in less than 20 seconds, and vaulted into orbit Wednesday with four classified payloads for the National Reconnaissance Office.

A Boeing-built Intelsat communications satellite launched three years ago is drifting in geostationary orbit more than 22,000 miles over the equator after suffering a fuel leak and releasing debris fragments last week, according to an analysis by space surveillance experts.

The flight of a United Launch Alliance Delta 4-Heavy rocket set for Aug. 26 from Cape Canaveral continues the Delta rocket family’s countdown to retirement. With five Delta 4-Heavy missions left to launch, ULA’s chief executive Tory Bruno says there are no plans to build more as the company transitions to the next-generation Vulcan Centaur rocket.