Live coverage of the United Launch Alliance Atlas 5 rocket flight to deploy NASA’s TDRS-M data relay satellite. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
(Launch webcast begins at 7:30 a.m. EDT / 1130 GMT)
Delta 4
Video: Liftoff of Delta 4 rocket and WGS 9 satellite
The United Launch Alliance Delta 4 rocket, standing 217 feet tall and weighing 900,000 pounds, unleashes 1.8 million pounds of thrust from its main engine and four side-mounted boosters at 8:18 p.m. EDT Saturday (0018 GMT Sunday) to launch the ninth Wideband Global SATCOM satellite for U.S. military and allied communications.
Falcon 9
SpaceX points to leaky valve as culprit in Crew Dragon test accident
Investigators believe a leak of propellant inside the Crew Dragon spacecraft’s propulsion system led to the capsule’s explosion April 20 during a ground test at Cape Canaveral, and a senior SpaceX official said Monday that delays are making it “increasingly difficult” to fly astronauts on the commercial spaceship before the end of the year.
