RL10C – Spaceflight Now

October 22, 2026

Breaking News

[ October 20, 2026 ] SpaceX scrubs launch of 27 Starlink satellites on Falcon 9 rocket from Vandenberg SFB Falcon 9
[ October 16, 2026 ] Blue Origin to add new Florida launch pads, seeks aggressive increase in New Glenn flight rate New Glenn
[ October 15, 2026 ] SpaceX launches a classified payload for U.S. Space Force Falcon 9
[ October 13, 2026 ] SpaceX launches NASA science and cargo to the International Space Station Falcon 9
[ October 13, 2026 ] Launch preview: NASA, SpaceX to launch new solar arrays, 6,300 pounds of cargo to the space station 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.