Live coverage of the countdown and launch of a United Launch Alliance Atlas 5 rocket on the NROL-35 mission with a classified payload for the National Reconnaissance Office. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
Related Articles
Upgraded X-37B spaceplane rockets into orbit aboard Atlas 5 launcher
May 17, 2020
Sophisticated new U.S. weather observatory being readied for launch
August 22, 2016
Photos: Navy satellite shrouded for launch
December 23, 2014