Live coverage of the countdown and launch of an Atlas 5 rocket with the SBIRS GEO 5 missile warning satellite for the U.S. Space Force. Text updates will appear automatically below. Follow us on Twitter.
United Launch Alliance’s live launch broadcast begins at 1:11 p.m. EDT (1711 GMT) Tuesday, May 18.
Arianespace is returning an Ariane 5 rocket — loaded with three U.S.-built satellites — back to its final assembly building in French Guiana to replace a suspect sensor on the vehicle that prompted officials to cancel a launch attempt Friday. Arianespace said Monday that the swap will delay the launch until around Aug. 14.
SES announced Thursday it has tapped SpaceX for two additional Falcon 9 rocket launches from Cape Canaveral to deliver more Boeing-built O3b mPower broadband satellites into orbit, adding to a pair of Falcon 9 flights ordered by SES last year to launch the first batch of mPower platforms beginning in late 2021.
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