Videos: Replays from successful Atlas 5 launch of TDRS-M

Another countdown for United Launch Alliance’s next Delta 4-Heavy rocket mission ended without a liftoff Wednesday after a computer sequencer detected a potential problem just before engine ignition.

Astronauts Doug Hurley and Bob Behnken plan to reveal a name for their Crew Dragon spaceship on the day they launch from the Kennedy Space Center in Florida on a test flight to restore orbital human spaceflight capability to the United States.

SpaceX conducted a static fire test of the SuperDraco abort thrusters on the company’s Crew Dragon spacecraft Wednesday afternoon at Cape Canaveral Air Force Station.