On April 1, 2026, for the first time in more than 50 years, four human beings left Earth’s orbit and headed for the Moon. Not to land on it — to loop around it. Artemis II is not a routine flight. It is an enormous gamble, freighted with history, uncertainty, and a weight of expectation NASA has not carried since the Apollo era.
The key difference from its predecessor, Artemis I — an uncrewed endurance test flown in 2022 — is that this mission carries people. That single change transforms every system aboard the Orion capsule into a matter of life and death.
The crew consists of NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, along with Jeremy Hansen of the Canadian Space Agency. Glover will be the first Black person, Koch the first woman, and Hansen the first non-American to leave Earth’s orbit and travel around the Moon.
All four face formidable odds. They also face the possibility of writing a thrilling new chapter in the history of space exploration.
The Risks of the Artemis II Mission
Some of the most serious concerns date back to Artemis I itself. During the uncrewed Artemis I flight, the Orion crew module sustained unexpectedly severe damage to its heat shield during reentry into Earth’s atmosphere.
That shield is what stands between the crew and superheated gases on the way home. With people aboard this time, that system has to work perfectly.
Orion will attempt what engineers call a “free return” trajectory, cutting its propulsion systems after using lunar gravity as a slingshot. The capsule will rely on Earth’s natural gravity to bring it back, making only three minor course corrections along the way. Apollo 13 is the only mission to have actually traveled around the Moon on this type of trajectory.
Perhaps the most dramatic moment will come when the spacecraft passes behind the Moon. At that point, the lunar mass will block all radio contact with Earth. For several minutes, the crew will be in complete isolation, with no support from Houston.
Unlike the Apollo missions, which relied on analog technology, Artemis II depends on redundant digital systems. If a cosmic ray strikes the navigation software during that communications blackout and triggers an error, the astronauts will have to fall back on backup protocols — ones they have spent two years training for — to regain manual control.
Finally, the Artemis II astronauts will be the first humans in decades to travel beyond low Earth orbit, leaving the protection of Earth’s magnetic field entirely behind.
The spacecraft will pass through the Van Allen belts — zones of high-energy charged particles — with a crew aboard for the first time in 50 years.
The mission must also validate new shielding against micrometeoroids and fine lunar dust — particles collectively known as regolith. That dust is extraordinarily abrasive and can degrade hatch seals. A millimeter-scale failure in cabin pressure would force an abort, sending the crew home via the free-return trajectory — a gravitational arc that takes four days to complete.
The 10-day mission is, in the most literal sense, a race against probability. NASA estimates the risk of crew loss at 1 in 30. Every hour that Orion holds its pressure and maintains stable communications is another hard-won data point for human deep-space survival.
If the mission goes as planned, it could keep the United States on track for crewed lunar landings in 2028. Failure, by contrast, would not simply be a scientific setback — it would be political, economic, and symbolic.
As a former NASA astronaut told ABC News: “The truth is, the risk is not zero, and it never will be.” And yet four people climbed aboard the most powerful rocket ever to carry humans into space. That alone is already historic.
