For the first time in more than half a century, human beings have traveled near the Moon. On Monday, April 6, NASA’s Artemis II crew completed a lunar flyby aboard the Orion spacecraft — passing within 4,070 miles of the lunar surface, circling the far side, and breaking a distance record that had stood since Apollo 13 in 1970.
The milestone is the most significant in crewed spaceflight in decades. It comes at a time when NASA is pushing toward a permanent human presence on the Moon, and it validates the Space Launch System and Orion spacecraft that will carry future crews to the surface.
What Happened
NASA’s SLS rocket and Orion spacecraft lifted off from Launch Pad 39B at Kennedy Space Center in Florida at 6:35 PM EDT on April 1, sending four astronauts on a planned 10-day test flight around the Moon and back.
Artemis II is the second flight of the Space Launch System, the first crewed mission of the Orion spacecraft, and the first crewed mission beyond low Earth orbit since Apollo 17 in December 1972.
Mission control teams in Houston and the Artemis II crew completed an outbound correction burn on the night of April 5 to refine the Orion spacecraft’s trajectory to the Moon.
On April 6, at 1:56 PM EDT, Artemis II broke the record for the farthest distance humans have ever traveled from Earth, surpassing the mark originally set by Apollo 13 at 400,171 km. The crew eventually reached a maximum distance of 406,773 km — approximately 252,760 miles — from Earth, traveling about 6,602 km farther into space than any human in history.
As the vehicle circled the far side of the Moon, communication back to Earth was blocked for about 40 minutes. At the mission’s maximum distance from Earth, the crew had traveled 252,760 statute miles from home.
The Science of the Flyby
The lunar flyby was not merely symbolic. NASA scientists identified approximately 35 geological features for the crew to observe. Working in pairs, they photographed the sites and described them in real time to scientists at Mission Control at Johnson Space Center.
The 30 science targets included the Orientale Basin — a nearly 600-mile-wide crater that straddles the Moon’s near and far sides. This 3.8-billion-year-old crater formed when a large object struck the lunar surface and retains clear evidence of that collision, including dramatic topography in its rings.
One target site was a potential future landing area for an uncrewed payload mission. The crew also got a glimpse of the lunar south pole — where humans might land as early as 2028.
Human observers offer something satellites cannot. Artemis II lunar science lead Kelsey Young noted that human eyes are “incredibly good at teasing out nuances” in color variations on the lunar surface — changes that can indicate mineral composition and are difficult to detect with satellite images.
The Crew
The mission is commanded by Reid Wiseman, 50, a NASA veteran and former International Space Station commander. Victor Glover, 49, a US Navy aviator, became the first Black astronaut assigned to a lunar mission. Christina Koch, 47, holds the record for the longest single spaceflight by a woman at 328 days. Jeremy Hansen, 50, a Canadian Space Agency astronaut, is the first non-American to travel to the Moon.
The crew named their spacecraft “Integrity.”
Why It Matters
NASA Associate Administrator Amit Kshatriya summarized the mission’s purpose: “Over the next 10 days, Reid, Victor, Christina, and Jeremy will put Orion through its paces so the crews who follow them can go to the Moon’s surface with confidence.”
Artemis II astronauts are specifically evaluating Orion’s life support, propulsion, power, thermal, and navigation systems — conducting manual spacecraft operations, practicing trajectory adjustments, testing communications at lunar distances, and rehearsing entry and splashdown procedures.
The mission is also the first to test a deep-space toilet. NASA’s Universal Waste Management System, stowed in the floor of Orion, allows the crew to use the bathroom in private — though the hardware has encountered a few operational hiccups that flight controllers say appear to be resolved.
What Happens Next
NASA’s Artemis II mission is planned to end with a splashdown in the Pacific Ocean near San Diego at approximately 8:07 PM EDT on Friday, April 10. After splashdown, helicopters will retrieve the crew for medical checkups aboard the USS John P. Murtha before they fly to Johnson Space Center in Houston.
The broader Artemis program is designed as a multi-decade effort to return humans to the lunar surface and eventually support missions to Mars. Artemis II is the proof-of-concept step. The next planned crewed mission aims to land astronauts near the Moon’s south pole — a region with potential water ice that could support long-term human habitation.
Monday’s flyby was not the destination. It was the rehearsal. And by all early accounts, the crew of Integrity performed it well.
