Twenty-five hours after its launch from the Kennedy Space Center, the Artemis II mission reached a historic milestone: the Orion spacecraft successfully completed its translunar injection burn and left Earth orbit to begin a trajectory around the Moon. NASA specifies that this is the first human launch beyond Earth orbit toward the Moon since Apollo 17 in 1972.
The great shift towards deep space
The decisive maneuver took place on April 2, after the first day spent in high Earth orbit. This ignition put the crew on their course to the Moon and set them on a record-breaking journey for humans in space. Shortly after the burn, Canadian astronaut Jeremy Hansen described the view as "phenomenal", praising what humanity was once again capable of achieving.
A day of testing before the green light
Before authorizing the launch to the Moon, NASA deliberately kept the crew near Earth for almost a day to validate Orion's essential systems. The official mission plan indicates that this phase included life support checks, physical exercises, ground-to-air video communications tests, and preparation for the translunar burn, described as the final major firing of the flight. A few minor incidents occurred early in the mission, including quickly resolved issues with the toilet, water supply, and some communication equipment.
Soon under the influence of lunar gravity
The official mission schedule shows that Orion is due to enter the Moon's sphere of influence on the fifth day of flight, when the Moon's gravity becomes stronger than Earth's. NASA then plans a closest approach to the Moon on the sixth day, at a distance of approximately 4,000 to 6,000 miles from the surface, before returning to Earth. This flyby could allow the crew to break the record for the longest human spaceflight, set by Apollo 13 in 1970.
A test flight for future missions
As a reminder, Artemis II is a crewed test flight of approximately ten days designed to qualify Orion and the SLS launch vehicle under real deep-space conditions before the next stages of the Artemis program. The mission relies on a so-called free-return trajectory around the Moon, which will automatically bring the spacecraft back to Earth after its passage behind the far side.
Four astronauts, several historic firsts
The crew consisted of Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen. Beyond the technical aspects, this flight marked several firsts: Victor Glover was the first Black astronaut sent to the Moon, Christina Koch the first woman, and Jeremy Hansen the first Canadian and the first non-American to participate in a manned lunar mission of this type.
