Atlas V

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File:MRO Launch.jpg
The Atlas V Rocket launches the Mars Reconnaissance Orbiter into space.

The Atlas V rocket is an expendable launch vehicle formerly built by the Lockheed Martin-Boeing joint venture United Launch Alliance. The rocket consists of a first stage powered by kerosene and liquid oxygen, which uses a Russian made RD-180 engine, and a liquid hydrogen–liquid oxygen powered Centaur upper stage.

The Atlas V rocket was used to launch the Mars Reconnaissance Orbiter on August 12, 2005.