RL10C – Spaceflight Now

September 26, 2025

Breaking News

[ September 25, 2025 ] Live coverage: SpaceX to launch 24 Starlink satellites on Falcon 9 rocket from Vandenberg Falcon 9
[ September 25, 2025 ] ULA launches third batch of Amazon’s Project Kuiper satellites from Cape Canaveral Atlas 5
[ September 25, 2025 ] SpaceX launches 28 Starlink satellites on Falcon 9 rocket from Cape Canaveral Falcon 9
[ September 24, 2025 ] SpaceX launches NASA, NOAA missions exploring the impacts of the Sun Falcon 9
[ September 22, 2025 ] A geologist, a former SpaceX launch director and a commercial astronaut; meet NASA’s 10 new astronaut candidates News

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.