Live coverage of the countdown and launch of an Ariane 5 rocket with the Intelsat 33e and Intelsat 36 communications satellites. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
Falcon 9
Musk previews busy year ahead for SpaceX
There’s a lot on SpaceX’s agenda this year if the company can maintain its pace, including refinements of the Falcon 9 rocket to hasten refurbishment between flights and the debut of the long-delayed Falcon Heavy launch vehicle with two side boosters recycled from previous missions, Elon Musk said after last week’s successful liftoff of a previously-flown rocket.
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.