NASA’s Pegasus barge, carrying the top four-fifths of the agency's Artemis 3 SLS core stage, arrives at NASA’s Kennedy Space Center Complex 39 turn basin wharf in Florida on April 27, 2026. (Image credit: NASA/Frank Michaux) The central piece of NASA's next moon rocket has made it to the launch site. The top 80% of the core stage of the Space Launch System (SLS) rocket that will launch the crewed Artemis 3 mission arrived at Kennedy Space Center (KSC) in Florida on Monday (April 27). The newly arrived hardware will be moved to KSC's cavernous Vehicle Assembly Building today (April 28), where teams will mate it with its engine section. That work will complete assembly of the 212-foot-tall (64.6-meter-tall) SLS core stage. Though SLS is a moon rocket, this particular vehicle won't get anywhere near Earth's nearest neighbor.…