Four NASA astronauts from the Artemis II mission experienced difficulty walking after returning to Earth following nearly ten days in space. The crew—Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen—required assistance from support staff upon landing in the Pacific Ocean. Their spacecraft traveled 252,000 miles, exceeding Apollo-era records, and re-entered Earth's atmosphere at 25,000 miles per hour. Experts note astronauts lose up to 20% muscle mass in two weeks during spaceflight. NASA confirmed the crew remained in good health.