ALT The main visual focus of this image is a large, black, conical RS-25 engine, which is connected to the core stage of NASA's Space Launch System (SLS) rocket for the Artemis II mission. Both the engine and the giant core stage, of which only the orange base is visible, are laying on their side inside a large warehouse. Behind this RS-25 engine, a technician can be seen on scaffolding, working on a similar RS-25 engine as it is attached to SLS. Credit: NASA/Eric Bordelon