Live coverage of the countdown and launch of an Ariane 5 rocket with the James Webb Space Telescope. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
Ariane 5 Clean Feed
NASA TV will provide live video coverage of the Ariane 5 launch with JWST beginning at 3 a.m. EST (0800 GMT) on Dec. 25. The Ariane 5 Clean Feed comes from the NASA TV Media Channel, which provides uninterrupted views of the Ariane 5 launch pad. The launch window opens at 7:20 a.m. EST (1220 GMT).