NASA is conducting a hot fire as part of the final round of certification testing ahead of production of an updated set of the engines for the SLS (Space Launch System) rocket.
Today’s test of RS-25 Engine 0525 on the Fred Haise Test Stand has a planned duration of 600 seconds with a maximum 113% power level.
The Artemis program is a US government-funded crewed spaceflight program that has the goal of landing "the first woman and the next man" on the Moon, specifically at the lunar south pole region by 2024.