Photos: Atlas 5 powers NRO payload into the night

The center section of SpaceX’s first Falcon Heavy rocket has been test-fired at the launch company’s test facility in Central Texas, a sign of progress toward the behemoth booster’s long-delayed maiden mission scheduled some time in the final months of 2017.

On the eve of the 10th anniversary of the Falcon 9 rocket’s debut flight, SpaceX launched a Falcon 9 from Cape Canaveral with a reused first stage Wednesday, then landed the previously-flown booster for a record fifth time after sending 60 more Starlink Internet satellites into space.

Northrop Grumman called off the launch of an Antares rocket and a Cygnus space station cargo freighter Thursday night on Virginia’s Eastern Shore, the third aborted countdown in less than 24 hours for three different U.S. rockets.