Centaur
Quick Summary
The Centaur is an American upper stage for launch vehicles, notable for being the first U.S. rocket stage to use cryogenic propellant. It has been used with both the Atlas and Titan launch vehicles. Early missions using the Atlas-Centaur included sending Surveyor spacecraft to the Moon. When paired with powerful Titan rockets, the Centaur stage has been instrumental in launching spacecraft to Mars and the outer planets, as well as deploying heavy national security payloads. Its development reflects a continuous effort to improve launch vehicle performance, reduce costs, and increase reliability.12
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