![](https://www.nasa.gov/sites/default/files/thumbnails/image/maf_20191021_p_rs-25_engine_install_reveal-62.jpg)
Engineers and technicians at NASA’s Michoud Assembly Facility in New Orleans have structurally mated the first of four RS-25 engines to the core stage for NASA’s Space Launch System (SLS) rocket that will help power the first Artemis mission to the Moon. via NASA http://www.nasa.gov/exploration/systems/sls/multimedia/first-of-4-rs25-engines-attached-to-artemis-rocket-stage.html