![Artemis I engines infographic](https://www.nasa.gov/wp-content/uploads/2023/03/artemis_i_engines_infographic_v4.jpg)
Space Launch System: Start Your Engines
NASA's new deep space rocket, the Space Launch System (SLS), will launch missions powered by four RS-25 engines, reliable engines used for more than 135 space shuttle missions. The engines have been upgraded with new controllers and other features for SLS. Each engine has a unique number that allows engineers to track its flight history.
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https://www.nasa.gov/image-detail/space-launch-system-start-your-engines/
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