Key Takeaway
For the first time since 1972, humans have left Earth orbit. The crew includes the first woman, first person of color, and first non-American to travel this far from home.
On the evening of April 1, 2026, at 6:35 PM Eastern time, NASA's Space Launch System rocket lifted off from Launch Complex 39B at Kennedy Space Center in Florida. Eleven minutes later, the FTS issue that had briefly threatened the countdown was a footnote, the solid rocket boosters were spent and falling toward the Atlantic, and four human beings were in orbit aboard the Orion spacecraft, named Integrity by its crew.
Twenty-four hours later, after a series of orbital maneuvers and system checks, Orion's main engine fired for five minutes and 49 seconds, producing 6,000 pounds of thrust and accelerating the spacecraft to a velocity that broke it free from Earth's gravitational grip. The translunar injection burn was flawless.
For the first time since Apollo 17 in December 1972, human beings are traveling to the Moon. After 53 years, we're going back.
Who's on board
The Artemis II crew is historic in ways that extend well beyond the destination.
Reid Wiseman (Commander): A Navy test pilot and former NASA astronaut who flew on the International Space Station in 2014. He's commanding the mission and is now the oldest person to travel beyond low Earth orbit.
Victor Glover (Pilot): A Navy aviator who served as pilot on SpaceX Crew-1 to the ISS in 2020-2021. On launch day, he became the first person of color to travel beyond low Earth orbit.
Christina Koch (Mission Specialist): An electrical engineer and NASA astronaut who holds the record for the longest single spaceflight by a woman (328 days on the ISS in 2019-2020). She's the first woman to travel beyond low Earth orbit.
Jeremy Hansen (Mission Specialist, Canadian Space Agency): A former CF-18 fighter pilot and the first non-American to travel beyond low Earth orbit. His selection reflects Canada's partnership in the Artemis program and the broadening of deep-space exploration beyond a single nation.
On the first day of the mission, the crew broke four barriers simultaneously. That's the kind of crew you put on a spacecraft when you're trying to say something about who gets to go to the stars.
What the mission actually is (and isn't)
Artemis II is not a moon landing. The crew will not touch the lunar surface. They won't even enter lunar orbit. What they're doing is a flyby: Orion will travel to the Moon's vicinity, loop around the far side on a free-return trajectory, and come back to Earth. The whole trip takes approximately 10 days.
A free-return trajectory means that once the translunar injection burn is complete, the laws of orbital mechanics and the Moon's gravity do the rest. Even if Orion never fires its engine again, the spacecraft will swing around the Moon and head back toward Earth. This is the same trajectory Apollo 13 used to get home safely after an oxygen tank exploded halfway to the Moon in 1970. It's the safest way to test a new crewed spacecraft in deep space because it has a built-in return ticket.
During the flyby, the crew will get an unprecedented view of the Moon's far side, the hemisphere that permanently faces away from Earth and has been seen up close by very few human eyes. They'll travel approximately 252,000 miles from Earth, farther than any human being in history, breaking the distance record set by Apollo 13.
The primary purpose of Artemis II is testing. Orion flew once before on Artemis I (an uncrewed mission in 2022), but this is its first flight with people inside. Everything, from the life support systems to the heat shield to the communication links to the toilets, is being evaluated under real mission conditions. Artemis I revealed concerning heat shield erosion during reentry, which led NASA to eliminate the originally planned "skip reentry" in favor of a steeper entry profile. The astronauts will test the spacecraft's ability to keep them alive, comfortable, and connected across a quarter-million miles of vacuum.
The living conditions are, by all accounts, cozy. Former astronaut Terry Virts compared the interior of Orion to "a small spare bathroom." Four people. Ten days. In a space roughly the size of a walk-in closet. They'll sleep in lightweight sleeping bags attached to the walls. Food is shelf-stable (no refrigerator on board). The crew's menu was published by NASA on March 4, and while the specifics aren't gourmet, they're a far cry from the squeeze tubes of the Mercury program.
Why it took 53 years to go back
The gap between Apollo 17 (December 1972) and Artemis II (April 2026) is the longest pause in human deep-space exploration in the history of spaceflight. It's reasonable to ask: what took so long?
The short answer is money and politics. After the Apollo program achieved its goal of beating the Soviet Union to the Moon, public interest waned, Congress cut NASA's budget, and the agency pivoted to the Space Shuttle and the International Space Station, both of which operated in low Earth orbit. Multiple proposals for lunar return were announced and cancelled over the decades: the Space Exploration Initiative (cancelled 1993), the Constellation Program (cancelled 2010), and various other concepts that never survived the transition from one presidential administration to the next.
The Artemis program, announced in 2019, has survived (so far) by building a broader coalition of support: international partnerships with Canada, Europe, and Japan; commercial contracts with SpaceX, Blue Origin, and others; and a bipartisan consensus that deep-space exploration matters for national competitiveness, scientific discovery, and the kind of inspiration that makes 8-year-olds design zero-gravity mascots for moon missions. (The Artemis II zero-gravity indicator, called "Rise," was designed by Lucas Ye of Mountain View, California. He's eight years old. He designed a Moon wearing Earth as a baseball cap. NASA fabricated it in their thermal blanket lab.)
What comes next
Artemis II is the test flight. Artemis III is the landing.
Currently scheduled for 2028, Artemis III will send astronauts to the lunar surface for the first time since 1972. They'll land near the Moon's south pole, where permanently shadowed craters may contain water ice that could be used for drinking, oxygen production, and rocket fuel. The lander will be SpaceX's Starship, modified for lunar operations.
Beyond Artemis III, NASA's long-term plan includes establishing a sustained human presence on and around the Moon, with regular crewed missions, a lunar surface habitat, and eventually using the Moon as a proving ground for the technologies needed to send humans to Mars. The Lunar Gateway, a small space station that was planned to orbit the Moon and serve as a staging point, was cancelled in March 2026, which may alter the architecture of future missions.
Whether this timeline holds depends on factors that have derailed every previous lunar return plan: budgets, political transitions, technical challenges, and the fickle nature of public attention. But for right now, in this specific week in April 2026, four astronauts are inside a spacecraft named Integrity, traveling farther from Earth than any human being has ever gone, carrying a mascot designed by a child and the collective hope of a species that hasn't done this in half a century.
The science happening on board
Artemis II isn't just a systems test. The crew is conducting science operations that lay groundwork for future lunar missions.
The AVATAR payload (A Virtual Astronaut Tissue Analog Response) is one of the more fascinating experiments on board. It mimics individual astronaut organs and measures how the deep-space radiation environment affects human tissue. Beyond low Earth orbit, astronauts lose the protection of Earth's magnetic field and are exposed to galactic cosmic rays and solar energetic particles at levels that ISS crews never experience. Understanding how this radiation affects the body is essential before sending people to the Moon for extended stays or, eventually, to Mars on missions lasting two years or more.
The crew will also perform CPR demonstrations in microgravity (it's harder than it sounds when nobody weighs anything), test emergency spacesuit procedures (how quickly can you seal your suit if the cabin depressurizes?), and check out Orion's medical kit and emergency communication systems. Christina Koch will test the Deep Space Network communication link, which is the system that maintains contact with spacecraft millions of miles from Earth.
On flight day 6, the crew will conduct lunar observation work, studying the Moon's surface from a vantage point that combines proximity with the human eye's ability to notice details that cameras sometimes miss. Some portions of the far side will be seen up close by humans for the first time.
The heat shield problem that almost wasn't mentioned
Here's something that didn't get enough coverage in the pre-launch excitement: Artemis I revealed a heat shield problem.
When the uncrewed Orion spacecraft returned to Earth in December 2022, engineers found that the heat shield had experienced more erosion than expected during atmospheric reentry. Chunks of the ablative material (the protective coating that burns away to dissipate heat) came off in ways that models hadn't predicted. The heat shield is the single most critical piece of safety hardware on the spacecraft. It's the only thing between the crew and temperatures exceeding 5,000 degrees Fahrenheit during reentry at 25,000 miles per hour.
NASA spent months analyzing the issue, and the solution was to change the reentry profile. Artemis I had used a "skip reentry" technique, where the spacecraft briefly dips into the atmosphere, bounces back out, and then descends again. This was supposed to reduce g-forces on the crew and improve landing accuracy. Instead, the skip maneuver appears to have contributed to the unexpected heat shield behavior.
For Artemis II, NASA eliminated the skip reentry entirely in favor of a steeper, more direct descent. This changes the thermal loading profile on the heat shield and, based on extensive testing, should prevent the erosion issues seen on Artemis I. But this is still a test flight. One of its most important objectives is proving that the modified reentry works with humans on board. The crew knows this. They trained for it. And the data from their return will determine whether future Artemis missions use the same approach.
The rocket: SLS by the numbers
The Space Launch System is the most powerful rocket NASA has ever built. Some numbers to put it in perspective:
The rocket stands 322 feet tall, roughly the height of a 32-story building. It produces 8.8 million pounds of thrust at liftoff, which is 15% more than the Saturn V that carried Apollo astronauts to the Moon. The twin solid rocket boosters burn through their propellant in about two minutes, and each one generates more thrust than 14 four-engine commercial jetliners at full power.
SLS is also controversial. It's taken over a decade to develop, cost billions more than originally projected, and uses hardware derived from the Space Shuttle program rather than the reusable rocket technology that SpaceX has pioneered. Critics argue that NASA could achieve the same objectives for less money using commercial rockets. Supporters counter that SLS's enormous payload capacity (it can send Orion, astronauts, and cargo to the Moon in a single launch) remains unmatched.
The debate will continue. But on April 1, 2026, SLS did exactly what it was built to do: it put four human beings on a trajectory to the Moon. Whatever its cost overruns and schedule delays, the rocket works.
How to follow the mission
NASA is providing live coverage of the Artemis II mission on NASA+ (their streaming service), their YouTube channel, and the Artemis blog at nasa.gov. Key upcoming events include:
The lunar flyby on approximately flight day 6, when the crew will observe the far side of the Moon from closer range than almost any human in history.
Splashdown in the Pacific Ocean off San Diego, expected around day 10 (approximately April 11), where the U.S. Navy will recover the crew and spacecraft.
Mission control briefings are being held regularly, and the crew is scheduled for multiple space-to-ground video communications throughout the journey. Photos taken by the astronauts during the mission are being downlinked and will be released publicly.
If you put your name on NASA's digital boarding pass for Artemis II, it's on an SD card inside the Orion spacecraft right now, heading for the Moon. If you didn't, you missed this one. But Artemis III sign-ups will almost certainly open. Get on the list.
We're going back to the Moon. It took 53 years. It's happening right now.
