RL10C – Spaceflight Now

January 26, 2026

Breaking News

[ January 26, 2026 ] Live coverage: SpaceX to launch GPS 3 satellite following switch from ULA Vulcan rocket Falcon 9
[ January 25, 2026 ] SpaceX launches 25 Starlink satellites to polar, low Earth orbit Falcon 9
[ January 23, 2026 ] Eastern Range ready for same day fueling of Space Launch System, Vulcan rockets Mission Reports
[ January 21, 2026 ] SpaceX launches first West Coast Starlink mission of 2026 Falcon 9
[ January 18, 2026 ] SpaceX launches Sunday sunset Starlink mission from Cape Canaveral Falcon 9

Aerojet Rocketdyne, ULA mark 60th anniversary of RL10 rocket engine

November 28, 2023 Will Robinson-Smith

A rocket engine with a long pedigree marked a big milestone on Monday. It’s 60 years since the hydrogen-fueled RL10 engine debuted onboard a Centaur upper stage launched from Cape Canaveral on Nov. 27, 1963.

Record-setting Atlas launches with new Centaur engine

December 13, 2014 Justin Ray

A United Launch Alliance Atlas 5 rocket put on a display of power, sound and light Friday evening at Vandenberg Air Force Base in launching a clandestine national security payload, then successfully debuted a new upper stage engine as it flew over the horizon.

Atlas 5 to sport new upper stage engine Thursday

December 8, 2014 Justin Ray

The most powerful Atlas rocket to ever fly from the West Coast is poised for launch Thursday to deliver a secret payload into orbit while debuting a new upper stage engine.