Making its second launch in just six days, a United Launch Alliance Atlas 5 rocket flight blasted off Thursday from Vandenberg Air Force Base in California.
Photo Credit: Gene Blevins/LA Daily News
See earlier NROL-55 coverage.
Our Atlas archive.
April 21, 2026
Breaking News
- [ April 21, 2026 ] Live coverage: SpaceX to launch final GPS III satellite for the U.S. Space Force Falcon 9
- [ April 20, 2026 ] Blue Origin launches third New Glenn rocket, but payload ends up in wrong orbit New Glenn
- [ April 19, 2026 ] Third flight of Blue Origin’s New Glenn rocket to feature 1st reuse of booster Mission Reports
- [ April 18, 2026 ] SpaceX makes 600th Falcon booster landing during West Coast Starlink mission Falcon 9
- [ April 16, 2026 ] Blue Origin hot fires its first previously flown booster, prepares for weekend launch Mission Reports
© 1999-2026 Spaceflight Now Inc