NASA launched Artemis II, a crewed test flight that will carry astronauts farther from Earth than any humans have gone in decades and send them on a loop around the moon, including a pass over portions of the far side.
The crew — Commander Reid Wiseman, Pilot Victor Glover, and Mission Specialists Christina Koch and Jeremy Hansen (the first Canadian on an Artemis flight) — began in Earth orbit immediately after launch and spent the first 24 hours checking out the Orion capsule and its systems. Because Orion’s life support and certain other systems have never flown with people aboard, the crew’s early hours focus on verifying those systems and ensuring the vehicle is fully ready for the translunar phase.
Key early milestones
– Solar arrays: Orion’s deployable solar arrays, critical for providing power on the mission, were deployed and latched soon after launch. Without them, the spacecraft cannot proceed.
– Systems checkout: The crew is methodically working through life support, communications, navigation, and other critical systems during the initial orbits.
– Management review: About 19 hours after launch, NASA managers meet to assess the vehicle’s performance and decide whether to proceed. If no red flags remain, the plan is to perform translunar injection (TLI) roughly 25–26 hours after liftoff.
Translunar injection and the point of no return
The TLI burn sends Orion on a trajectory to the moon. That maneuver is a major decision point: once TLI is performed, the spacecraft is committed to the lunar flyby. Returning from a lunar trajectory takes days and does not have the quick “return to Earth in hours” option that low-Earth-orbit missions do, so NASA requires confidence that systems are operating nominally before authorizing TLI.
Trajectory and timeline
– Transit: Orion will take about four days to reach the moon and four days to return — roughly an eight-day round trip.
– Lunar loop: The spacecraft will loop around the moon and spend a few hours behind it, out of direct radio contact, taking photos and making observations, including views of the far side that few humans have seen.
– Test objectives: Artemis II is primarily a test flight to validate Orion’s performance with crew, demonstrating life support, propulsion and power systems in deep space.
How Artemis II fits into the larger Artemis program
Artemis II is a crewed follow-up to Artemis I (an uncrewed test). It is one step toward returning humans to the lunar surface. NASA’s schedule envisions a crewed lunar landing mission later in the decade, with a likely target around 2028 (this would be Artemis IV under current planning). Before a landing, NASA plans additional flights and development work.
Outstanding work before a lunar landing
– Lunar lander: NASA does not yet have a flight-ready lunar lander. Commercial partners such as SpaceX and Blue Origin have been contenders to build landers, but at the time of Artemis II the lander has not been delivered or fully integrated into a landing campaign.
– Additional tests: NASA expects at least one more test flight in low Earth orbit and continued systems checks before committing to a surface mission.
What to watch next
– The management go/no-go meeting about 19 hours after launch and the subsequent TLI burn roughly 25–26 hours after liftoff are the near-term milestones that will determine whether Orion departs for the moon.
– Ongoing checkouts of life support and other systems over the first day or two of the mission will be closely watched; these are vital because Orion has not flown with people aboard before.
If the checkouts remain nominal and TLI proceeds, Artemis II will demonstrate critical deep-space capabilities with a four-person crew and provide further data to inform NASA’s next steps toward a human return to the lunar surface.