Live coverage: Ariane 5 blasts off with two Intelsat satellites

European engineers are eager to test an experimental re-entry demonstrator Wednesday to validate technologies for future robotic exploration probes, winged space planes, and reusable rocket boosters.

Liftoff of a previously-flown Falcon 9 rocket from NASA’s Kennedy Space Center with a European-built television broadcast satellite has been pushed back from Saturday until at least next Wednesday night, officials said.

After a quarter-century readying Global Positioning System satellites for launch at a Cape Canaveral Air Force Station processing hub, the final bird rolled out Saturday as the navigation program transitions to a new era.