RL10C – Spaceflight Now

April 20, 2026

Breaking News

[ April 20, 2026 ] Blue Origin launches third New Glenn rocket, but payload ends up in wrong orbit New Glenn
[ April 19, 2026 ] Third flight of Blue Origin’s New Glenn rocket to feature 1st reuse of booster Mission Reports
[ April 18, 2026 ] SpaceX makes 600th Falcon booster landing during West Coast Starlink mission Falcon 9
[ April 16, 2026 ] Blue Origin hot fires its first previously flown booster, prepares for weekend launch Mission Reports
[ April 15, 2026 ] Blue Origin one step closer to launching New Glenn from Vandenberg Space Force Base New Glenn

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.