RL10C – Spaceflight Now

October 16, 2025

Breaking News

[ October 15, 2025 ] SpaceX sends 28 Starlink satellites to low Earth orbit in predawn launch Falcon 9
[ October 14, 2025 ] SpaceX launches 2nd batch of satellites for Space Development Agency following weather scrub Falcon 9
[ October 14, 2025 ] Rocket Lab launches 7th StriX Earth observation satellites for Japan-based Synspective Electron
[ October 14, 2025 ] SpaceX launches final Version 2 Starship-Super Heavy rocket Mission Reports
[ October 13, 2025 ] SpaceX launches 24 Amazon Kuiper satellites following days of weather delays 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.