RL10C – Spaceflight Now

September 5, 2025

Breaking News

[ September 4, 2025 ] SpaceX aces 500th Falcon booster landing amid sunrise Starlink mission Falcon 9
[ September 2, 2025 ] SpaceX launches 28 Starlink satellites on Wednesday sunrise Falcon 9 flight Falcon 9
[ September 2, 2025 ] SpaceX’s Tuesday night Starlink features rare debut of a Falcon booster Falcon 9
[ August 30, 2025 ] SpaceX’s Sunday morning Falcon 9 launch sends 1,900th Starlink to orbit in 2025 Falcon 9
[ August 29, 2025 ] SpaceX launches 24 Starlink satellites into polar orbit 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.