NASA’s Pegasus barge, carrying the top four-fifths of the agency’s SLS (Space Launch System) core stage for the Artemis III mission, arrives at NASA’s Kennedy Space Center Complex 39 turn basin wharf in Florida on Monday, April 27, 2026. Artemis III will launch astronauts to Earth’s orbit aboard the Orion spacecraft on top of SLS to test rendezvous and docking capabilities between Orion and commercial spacecraft needed to land Artemis IV astronauts on the Moon in 2028.