Boeing employees, from left to right, Adam Shaffer, Electrical Ground Systems equipment and technical lead engineer; Anna Fischer, Space Launch System electrical engineering intern; Ethan Minvielle, Space Launch System electrical engineering intern; and Joseph Colangelo, Space Launch System Test and evaluation engineering intern, pose for a photograph following left-hand aft assembly solid rocket booster segment for NASA’s Artemis III SLS (Space Launch System) was secured to the mobile launcher at the agency’s Vehicle Assembly Building at NASA Kennedy on Thursday, July 9, 2026. The twin boosters, manufactured by Northrop Grumman in Utah, will provide more than 75 percent of the SLS rocket’s total thrust at launch. The Artemis III mission will launch crew in the Orion spacecraft on top of the SLS rocket to test rendezvous and docking capabilities between Orion and commercial spacecraft needed to land astronauts on the Moon.