Artemis II, NASA's first crewed lunar mission since Apollo 17, launched Wednesday at 6:35 pm EDT from Kennedy Space Center. The Space Launch System (SLS) rocket, standing 322 feet tall and generating 8.8 million pounds of thrust, propelled four astronauts into orbit—the most powerful human-rated rocket ever flown. The crew includes Commander Reid Wiseman, Pilot Victor Glover, Mission Specialist Christina Koch, and Canadian astronaut Jeremy Hansen, marking international collaboration in lunar exploration.

The mission aims to test Orion spacecraft systems and manual piloting capabilities during a 9-day journey that will take the crew 252,799 miles from Earth, surpassing previous human spaceflight records. Orion will execute a free-return trajectory, using lunar gravity assists to return safely to Earth, with a planned Pacific Ocean splashdown on April 10. This uncrewed lunar orbit mission precedes future Artemis program goals, including Artemis IV's 2028 lunar landing and development of SpaceX and Blue Origin landers for surface operations.

NASA's $100 billion Artemis initiative faces heightened stakes amid China's lunar ambitions, with Artemis II serving as a critical test of SLS-Orion integration and deep-space navigation. The crew will conduct rendezvous and proximity operations, manually docking Orion with the upper stage to validate precision maneuvers. These tests will inform 2025's Artemis III, which will land astronauts near the Moon's south pole.

Artemis II's success reinforces NASA's leadership in human spaceflight while accelerating commercial space partnerships. As SpaceX's Starship and Blue Origin's Blue Moon landers near completion, the mission underscores the U.S.-Canada alliance in advancing cislunar infrastructure. The Pacific splashdown will conclude humanity's first crewed voyage beyond low-Earth orbit since 1972, setting the stage for permanent lunar presence and eventual Mars exploration.