The SLS (Space Launch System) launches with the Artemis II crew aboard the Orion spacecraft on April 1, 2026, at NASA’s Kennedy Space Center in Florida. Credit: NASA/Bill Ingalls Spurred by American ingenuity, astronauts on NASA’s Artemis II mission are in flight, preparing for the first crewed lunar flyby in more than 50 years. NASA’s SLS (Space Launch System) rocket lifted off from Launch Pad 39B at the agency’s Kennedy Space Center in Florida at 6:35 p.m. EDT Wednesday, sending four astronauts aboard the Orion spacecraft on a planned test flight around the Moon and back. “Today’s launch marks a defining moment for our nation and for all who believe in exploration. Artemis II builds on the vision set by President Donald J. Trump, returning humanity to the Moon for the first time in more than 50 years and opening the next chapter of lunar exploration beyond Apollo.…