NASA’s Artemis II SLS (Space Launch System) rocket is getting ready to send four astronauts from Earth on a journey around the Moon in 2026. Engineers have upgraded the agency’s Moon SLS rocket inside and out after the Artemis 1 launch. Boosters provide 75% thrust; RS-25 engines burn; jettison boosters and launch abort system. Launch Abort System (LAS) arms at T-5:25Terminal count includes propellant loading, power/software transitions. The abort system is comprised of three solid rocket motors: the jettison, attitude, and abort motors.