RL10C – Spaceflight Now

October 2, 2026

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[ October 1, 2026 ] Falcon Heavy to fly its first mission for U.S. spy satellite agency Falcon Heavy
[ October 1, 2026 ] Fresh crew takes off for six-month stay aboard space station Falcon 9
[ October 1, 2026 ] NASA, SpaceX launch next crewed mission to the International Space Station Falcon 9
[ September 29, 2026 ] NASA plans unpiloted Starliner test flight at end of year News
[ September 28, 2026 ] Starship returns to Earth; rocket splashes down north of Hawaii after three-hour flight Mission Reports

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.