Four astronauts aboard NASA's Orion capsule, Integrity, splashed down in the Pacific Ocean off San Diego Friday evening, completing a 10-day, 695,000-mile voyage around the moon. The mission pushed human exploration further than ever before, reaching 252,756 miles from Earth, a distance exceeding any previous crewed flight, according to NASA. Canadian astronaut Jeremy Hansen urged future generations to surpass this new benchmark.
The capsule entered Earth's atmosphere at approximately 24,000 miles per hour, initiating a planned communication blackout. Its heat shield endured temperatures around 3,000 degrees Fahrenheit during this fiery re-entry. Two drogue parachutes deployed at 22,000 feet, reducing speed to about 200 miles per hour, followed by three main parachutes at 6,000 feet, slowing the craft to 20 miles per hour before its ocean landing. This journey surpassed the 248,655-mile record set by Apollo 13, marking a new milestone for human spaceflight. During their time orbiting the moon, Commander Reid Wiseman, Pilot Victor Glover, and Mission Specialists Christina Koch and Jeremy Hansen observed sights previously unseen by human eyes. They became the first people to view the entire far side of the moon's disk from their higher altitude compared to Apollo missions. Astronaut Glover described a solar eclipse from the moon's vicinity, stating, "Humans probably have not evolved to see what we are seeing." He noted a halo of light around the moon as the sun slipped behind it, illuminating it from behind. The crew also provided ground scientists with detailed descriptions of lunar geological features, including canyons and craters, during their flyby. Just after breaking the distance record, the astronauts proposed names for two previously unnamed lunar craters. One they called Integrity, honoring their spacecraft, and the second, Carroll, in memory of Commander Wiseman's wife, who died in 2020. Hansen radioed down the name, "It's a bright spot on the moon, and we would like to call it Carroll," as the emotional crew embraced. The mission, which launched April 1 from Florida's Kennedy Space Center aboard the 322-foot-tall Space Launch System rocket, involved extensive testing of the Orion spacecraft's systems. Astronauts manually flew the capsule and conducted multiple course correction burns. One minor issue involved difficulty venting wastewater from the capsule's toilet into space. NASA Administrator Jared Isaacman acknowledged this during a conversation with the crew, saying, "We definitely have to fix some of the plumbing." A new laser communications system transmitted scientific data back to Earth at speeds up to 260 megabits per second, significantly faster than earlier radio systems. From their lunar vantage point, the astronauts gained a three-dimensional understanding of the moon's rugged topography, which is not possible through photographs alone. They described the lunar south pole, a target for a future Artemis landing as soon as 2028, as a "jagged and a more challenging place to find a place to land and to traverse," according to Astronaut Glover. Differences in brightness were evident on the lunar surface, particularly in young crater centers where whitish minerals had been freshly exposed. Astronaut Koch compared these bright spots to "a lampshade with tiny pinprick holes and the light shining through."
Beyond visual observations, the crew reported seeing colors on the moon not visible from Earth, including brownish patches and a greenish tint on Aristarchus Plateau. Trevor Graff, a NASA science officer, suspects this indicates "volcanic terrain," noting that "certain minerals have greenish hues to them." During the solar eclipse, astronauts observed multiple impact flashes from small meteorites hitting the lunar surface. Understanding the frequency of these impacts is crucial for establishing a future lunar base, a stated objective of the Artemis program. Laurie Leshin, a professor at Arizona State University, explained that unlike Earth, "on the moon, there's nothing there to slow them down, so even the small stuff whacks into the moon with quite a lot of force."
With the crew safely back, NASA's Artemis science team will now analyze the extensive data collected, including photos, audio recordings, and astronaut sketches. Juliane Gross, a team member, indicated that this information will help "direct orbiters to those regions that they specifically called out where they saw these colors." The successful Artemis II mission paves the way for Artemis III, which aims to land humans on the moon's south pole by 2028, continuing humanity's return to the lunar surface. Commander Wiseman expressed a hope that their journey would make "the world pause and remember that this is a beautiful planet and a very special place in our universe."
