Ars Technica
• Stephen Clark
NASA Hot-Fires First $100 Million RS-25 Engine, Clearing Propulsion Hurdle for SLS
NASA has test-fired the first of its new $100 million RS-25 engines for the Space Launch System, marking a key step in qualifying propulsion hardware for the Artemis lunar program. This hot-fire validates the upgraded engine ahead of integrated core stage testing and launch preparations.
