Artemis II Launches Crew on Historic Moon Mission

NASA's Artemis II mission successfully launched at 6:24 p.m. EDT on April 1 from Kennedy Space Center in Florida, sending four astronauts—Commander Reid Wiseman, Victor Glover, Christina Koch, and Canadian astronaut Jeremy Hansen—on a roughly 10-day journey around the moon. This marks humanity's first crewed flight to the lunar surface since Apollo 17 more than five decades ago.

The mission faced repeated setbacks and delays due to technical issues, including hydrogen fuel leaks and problems with the upper stage propellant pressurization system. The launch was originally planned for early February but was postponed until all issues were resolved.

The Artemis II mission is part of NASA’s broader plans to establish a sustained human presence on the moon and eventually send astronauts to Mars. The crew will fly within about 5,000 miles of the moon's surface at its closest approach, surpassing Apollo 13's distance record and making them the most remote travelers in history.

The launch drew over 400,000 spectators to Florida’s Space Coast, with an economic impact estimated around $160 million. The weather was favorable, with a 90 percent chance of conditions suitable for launch. Anxiety briefly spiked when less than two hours before the launch window was to open, NASA identified a technical issue related to the rocket's flight termination system, but it was resolved promptly.

The crew is spending about 24 hours orbiting Earth while they put their Orion capsule through its paces before finally heading for the moon. Their spectacular launch marked the first piloted moonshot since the end of the Apollo program 53 years ago. The Artemis crew will not land on the moon or even go into lunar orbit; instead, they plan to loop around it, getting an unprecedented view of the far side.

The mission aims to test flight controllers and procedures needed to safely send astronauts back to the moon for long-duration stays as NASA makes plans for a future moon base. The crew will thoroughly test their Orion capsule, which is making only its second flight—and its first with a crew on board—to ensure it's up to the task.

The Artemis II mission includes several key milestones: a manual control test by pilot Victor Glover, an 18-hour day followed by two four-hour sleep periods early Thursday, and a critical trans-lunar injection (TLI) service module engine firing expected on Thursday evening. The TLI burn will increase the spacecraft's velocity by about 900 mph, breaking it out of Earth orbit to head for the moon.

The trip to the moon will take about four days. On Monday, the astronauts will enter the 'lunar sphere of influence' and begin speeding up as the moon's gravitational pull finally begins exceeding Earth's. The spacecraft will reach a distance of some 252,799 miles from Earth—surpassing a record set by the Apollo 13 crew in 1970—and pass within about 4,100 miles of the lunar surface at close approach.

The mission is also carrying stowaways in the form of CubeSats—tiny satellites bound for high-Earth orbit. The payloads are from Germany, South Korea, Saudi Arabia, and Argentina, and will study various impacts of space radiation on space hardware, monitor space weather, and how the environment affects electrical hardware bound for the moon.

The astronauts themselves will be the subject of science experiments: Because the crew is going farther into deep space than any human has gone before, researchers are taking this opportunity to study the impact it will have on the human body. Medical researchers will be collecting data on physiological changes in response to space travel and increased radiation exposure.

The Artemis II mission is a significant milestone in NASA's plans to return humans to the moon and eventually send astronauts to Mars. The successful launch marks a new era in space exploration, with the Orion spacecraft playing a crucial role in testing flight controllers and procedures needed for future lunar missions.