On Artemis I Flight Day 16, Orion left its distant lunar orbit and began its return journey home. The spacecraft successfully completed the distant retrograde departure burn at 3:53 p.m. CST, firing its main engine to set the spacecraft on course for a close lunar flyby before its return home. Th
modified for use on Orion and built by Aerojet Rocketdyne. The engine has the ability to provide 6,000 pounds of thrust. The proven engine flying on Artemis I flew on 19 Space Shuttle flights, beginning with STS-41G in October 1984 and ending with STS-112 in October 2002.
The burn is one of two maneuvers required ahead of Orion’s splashdown in the Pacific Ocean on December 11. The second will occur on Monday, December 5, when the spacecraft will fly 79.2 miles above the lunar surface and perform the return powered flyby burn, which will commit Orion on its course toward Earth.
Teams also continued thermal tests of the star trackers during their eighth and final planned test. Star trackers are a
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