In April 2026, four Artemis II astronauts flew farther from Earth than any humans in history, reaching 406,771 kilometres from home — breaking a record Apollo 13 had held since 1970, without Artemis II ever landing on the Moon.

Artemis II did not land on the Moon. It did something quieter but historically precise: it carried four people farther from Earth than any humans had ever travelled, then brought them home.

On 6 April 2026, during the mission’s lunar flyby, NASA astronauts Reid Wiseman, Victor Glover and Christina Koch, along with Canadian Space Agency astronaut Jeremy Hansen, passed the distance record set by Apollo 13 in April 1970. NASA’s post-flyby update reported that Orion reached a maximum distance from Earth of 252,756 miles, or 406,771 kilometres, two minutes after closest approach to the Moon.

The number matters because it puts Artemis II in a different category from the lunar landing missions people often remember first. The crew flew around the Moon but never descended to it. Their mission was a crewed test of Orion, the Space Launch System and deep-space operations, with the lunar flyby serving both as a navigation test and as the path that sent them beyond the old Apollo 13 mark.

NASA described the flyby in a Flight Day 6 mission update, noting that the four astronauts surpassed Apollo 13’s distance of 248,655 miles before reaching the mission’s high point away from Earth. An earlier same-day preview had laid out the timing of the record attempt, the planned communications blackout behind the Moon and the lunar observation period.

Why Apollo 13 held the record

Apollo 13 was never meant to become the farthest human voyage from Earth. The mission launched in 1970 as a lunar landing attempt, but an oxygen tank explosion forced NASA to abandon the landing and use the Moon’s gravity to help return the spacecraft home.

That emergency trajectory sent Jim Lovell, Jack Swigert and Fred Haise around the far side of the Moon and out to 248,655 miles from Earth. For more than five decades, that unplanned survival route remained the benchmark for how far any human had travelled from home.

Artemis II broke that record by design, not by accident. The mission used Orion’s planned lunar flyby to test the spacecraft with people aboard in deep space. Its crew crossed the old Apollo 13 distance at about 1:56 p.m. EDT on 6 April, then continued outward before reaching the new maximum distance later that evening.

The difference is not enormous by astronomical standards. Artemis II exceeded Apollo 13 by a little over 4,000 miles, around 6,600 kilometres. But human spaceflight records are partly about hardware, partly about risk and partly about what a mission proves. In that sense, the margin is less important than the fact that crewed deep-space operations had resumed beyond Apollo’s old limit.

A flyby, not a landing

Artemis II was the first crewed mission of the Artemis programme and the first human trip to the Moon’s vicinity since Apollo 17 in 1972. Its role was not to put astronauts on the surface. That task belongs to later Artemis missions.

Instead, Artemis II tested the full crewed stack. Orion had to support four astronauts, maintain navigation and communications, handle deep-space thermal conditions, execute burns and bring the crew safely through re-entry. The Space Launch System had to place the spacecraft on the correct path, while mission controllers had to manage a flight profile no crew had flown in more than half a century.

The farthest-distance record came during a mission phase that was also scientifically useful. NASA’s update says the crew photographed and described far-side terrain, including impact craters, ancient lava flows, surface cracks and ridges. The astronauts also saw Earthset and Earthrise from Orion’s perspective as the spacecraft moved behind the Moon and re-emerged.

During the planned communications blackout, the Moon blocked radio links between Orion and Earth. Around that interval, Orion made its close pass over the lunar surface, then reached its maximum distance from Earth as the geometry of the flyby carried it beyond the far side.

What the number says

The record distance was 406,771 kilometres from Earth, equivalent to 252,756 miles. NASA’s Spanish-language post-splashdown release, updated in May 2026 to reflect the official mission distance, also used the same maximum-distance figure and reported that the mission covered 1,118,624 kilometres in total.

That phrasing is useful because it separates two different measures. The maximum distance describes the farthest point from Earth. The total distance describes how much Orion travelled over the whole mission. Artemis II set the human distance record at the former point, not by flying a simple straight line away from Earth.

The record also shows how lunar trajectories can produce counterintuitive milestones. Landing on the Moon does not automatically take a crew farther from Earth than a flyby around the far side. A non-landing mission can reach a more distant point because of the shape of the path around the Moon and the position of the spacecraft relative to Earth.

That is why Apollo 13, a mission that never landed, held the previous record for so long. It is also why Artemis II, another mission that did not land, was able to break it.

What Artemis II proved

Artemis II’s record is likely to be remembered as a headline number, but the mission’s operational test was broader. The crew validated Orion’s life-support systems with humans aboard, performed spacecraft checks, supported lunar observations and demonstrated that NASA and its partners could conduct a crewed lunar flyby after decades in low Earth orbit.

The mission also connected directly to Artemis III and later flights. Before NASA can attempt a crewed lunar landing under Artemis, it needs confidence in the transport system that carries astronauts from Earth to lunar space and back. Artemis II was built to gather that confidence.

In that sense, the distance record is both symbolic and practical. Symbolically, it moved the outer boundary of human travel for the first time since Apollo. Practically, it marked a point in a test flight that asked Orion, its crew and its ground systems to operate in the environment where later lunar missions will depend on them.

No footprints were made. No surface samples were collected. But for a few hours in April 2026, four people were farther from Earth than anyone before them, looking back from a spacecraft that had just shown it could carry humans around the Moon again.