Live coverage of the countdown and launch of an Ariane 5 rocket with the DirecTV and Sky Mexico 1 communications satellites. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
Mission Reports
Video: First OneWeb satellites deployed in orbit
Mission Reports
James Webb Space Telescope completes critical end-to-end test
NASA’s $8.8 billion James Webb Space Telescope has completed critical end-to-end testing in a giant vacuum chamber at the Johnson Space Center, proving the telescope will work properly in the deep cold of space, bring starlight to a sharp focus and precisely track its astronomical targets when launched in 2019.
