Artemis II Blasts Off on Historic 10-Day Lunar Journey

CAPE CANAVERAL, FL — For the first time in over 50 years, humans are on their way back to the Moon. On Wednesday, April 1, 2026, at 6:35 p.m. EDT, NASA's Space Launch System (SLS) rocket roared to life at Kennedy Space Center's Launch Complex 39B, carrying the Artemis II crew into the history books.

The mission, crewed by Commander Reid Wiseman, Pilot Victor Glover, and Mission Specialists Christina Koch and Jeremy Hansen, marks the first time since December 1972 that a human-piloted spacecraft has ventured beyond Low Earth Orbit. Hansen is also the first Canadian to fly beyond Earth orbit.

Launch Day Drama | A Race Against the Clock

The path to Wednesday's "Go" for launch was not without tension. In the final hours of the countdown, teams had to troubleshoot a temperature reading on one of two batteries for Orion's Launch Abort System. After a rapid assessment, engineers determined it was a faulty sensor and proceeded with the flight.

In a rare political crossover, the launch window was briefly complicated by a pro-forma Senate session earlier in the day, but the crew ultimately cleared the window with 90% favorable weather. Shortly after liftoff, President Trump congratulated the crew during a televised address, calling the four astronauts "brave people" and wishing them Godspeed on their "unbelievable" journey.

The "Floating Lab" | A Deep-Space Medical Milestone

While the visual spectacle of the SLS liftoff captured the world's attention, the true scientific heart of this mission is the unprecedented biological research happening inside the Orion capsule, named Integrity. As the crew pushed past the 1,200-nautical-mile mark, nearly five times higher than the International Space Station, they officially entered what NASA classifies as the "Deep Space" environment.

Here, the Earth's protective magnetic field thins dramatically, exposing the human body to levels of galactic cosmic radiation and solar particles not experienced by any human in over half a century.

Research Area	Focus
Cellular Resilience	Specialized sensors tracking how deep-space radiation affects DNA repair and cellular aging in real-time
AVATAR Study	Core health experiment monitoring muscle and bone density loss during the 10-day lunar transit
Microbiome Shifts	Tracking how the Orion environment alters the crew's internal bacteria, critical for future Mars mission planning
Cognitive Performance	Continuous neuro-monitoring measuring how deep-space radiation affects decision-making and reaction times

This data is not academic. The findings from Artemis II will directly shape the medical protocols, shielding designs, and mission durations for Artemis III, which is planned to land astronauts on the lunar south pole. It will also feed into NASA's broader deep-space science program, which is already mapping subsurface ocean worlds like Europa as candidate destinations for future crewed missions.

Current Status | High Earth Orbit

As of Thursday, April 2, the Integrity is in a highly elliptical Earth orbit. The crew has successfully deployed the spacecraft's four 63-foot solar array wings and is performing initial systems checks, including a minor repair on the onboard toilet's fan. The crew reported the fix was straightforward.

Tonight, at approximately 8:00 p.m. EDT, the crew is scheduled for the mission's most critical early maneuver: the Translunar Injection (TLI) burn. This engine firing will kick Integrity out of Earth's gravitational influence and set it on a "free-return" trajectory — a path that will loop the spacecraft around the far side of the Moon and use lunar gravity to slingshot the capsule back toward Earth, without requiring a successful engine burn for a safe return.

What Lies Ahead | The 10-Day Mission Timeline

Date	Mission Milestone
April 1	SLS liftoff, 6:35 p.m. EDT, Kennedy Space Center, Launch Complex 39B
April 2 (tonight)	Translunar Injection burn, ~8:00 p.m. EDT. Crew leaves Earth orbit.
April 4	Orion reaches the halfway point between Earth and the Moon. High-resolution "Blue Marble" images transmitted.
April 6	Mission climax. Crew passes approximately 5,000 miles above the lunar surface, traveling farther from Earth than any human in history, approximately 252,000 miles.
April 11	Planned splashdown in the Pacific Ocean. U.S. Navy recovery team already on station.

The Crew | Who Is Flying Artemis II

The four-person crew represents the breadth of NASA's astronaut corps and its international partnerships:

• Commander Reid Wiseman — U.S. Navy test pilot, former Chief of the Astronaut Office. One ISS expedition veteran. Flying his second mission.
• Pilot Victor Glover — U.S. Navy aviator, previously pilot on SpaceX Crew-1 to the ISS. The first Black astronaut assigned to a lunar mission.
• Mission Specialist Christina Koch — Holds the record for the longest single spaceflight by a woman (328 days). The first woman assigned to a lunar mission trajectory.
• Mission Specialist Jeremy Hansen — Canadian Space Agency astronaut selected in 2009. The first Canadian, and first non-American, to fly beyond Earth orbit.

Why This Matters | The Foundation for Mars

Artemis II is not a landing mission. There is no descent stage, no lunar surface EVA, no "one small step." What it is, arguably, is more important: the first full-systems validation of every component that must work reliably before NASA can risk an actual landing. The life support, the navigation, the radiation monitoring, the deep-space communication — all of it will be stress-tested on this flight with a live crew aboard for the first time.

"We aren't just going back to the Moon to visit; we are going to learn how to stay. This is the foundation for the next giant leaps to Mars."

If the TLI burn tonight goes as planned, the four astronauts aboard Integrity will be the farthest humans from Earth in over five decades by April 6. The data they bring back, biological, mechanical, and navigational, will underpin every crewed deep-space mission that follows.