NASA’s Artemis II mission marks historic crewed journey to the Moon’s orbit

As NASA’s Artemis II mission progresses into a pivotal mid-flight phase, the Orion spacecraft is en route to the Moon for a meticulously planned lunar flyby. This marks the first crewed mission beyond low-Earth orbit in over 50 years, with the spacecraft set to complete its closest approach on April 6, 2026.

Launched on April 1 aboard the Space Launch System (SLS) from Kennedy Space Center’s Launch Complex 39B, the mission includes a four-member crew that has already achieved a significant milestone. They carried out the trans-lunar injection (TLI) burn on April 2, approximately 25 hours post-launch, which set Orion on its free-return trajectory to the Moon and back—signifying humanity’s re-entry into deep space with crewed operations for the first time since the Apollo 17 mission in 1972.

Since then, mission controllers have executed trajectory correction burns to optimize the spacecraft’s path. As of April 4, the crew remained on the outbound leg of their 10-day mission. On April 5, Orion is scheduled to cross into the Moon’s sphere of influence, where lunar gravity will take precedence over Earth’s.

The highlight of the mission will occur on April 6, when the spacecraft maneuvers for its nearest approach to the lunar surface, flying at an altitude of approximately 4,000 to 6,500 miles (6,400–10,500 kilometers) above the Moon’s far side. During this flyby, the crew will conduct high-resolution imaging and visual observations of lunar features previously unseen in real time, in addition to capturing the captivating Earthrise.

During this crucial flyby, the astronauts will temporarily lose radio contact with mission control as they maneuver behind the Moon. Their anticipated splashdown in the Pacific Ocean near San Diego is scheduled for April 10 or 11.

NASA Administrator Jared Isaacman, discussing the mission’s implications and associated risks before the launch, emphasized the importance of the flight. “This crew is embarking on the most hazardous human spaceflight mission in over half a century. Once we commit to TLI, the dynamics change significantly,” he noted. He emphasized the importance of ensuring the crew’s safe return after the mission objectives are met, with an eye towards advancing both the Orion spacecraft and the SLS program in preparation for future Artemis missions.

Artemis II is not intended as a lunar landing but rather a critical test flight aimed at assessing the Orion spacecraft’s capabilities in deep space, such as its life support and navigation systems, as well as its ability to re-enter Earth’s atmosphere at high speeds. The crew consists of NASA astronauts Reid Wiseman (commander), Victor Glover (pilot), Christina Koch (mission specialist), and Canadian Space Agency astronaut Jeremy Hansen.

With Artemis II serving as a foundational mission for NASA’s broader Artemis program, the initiative seeks to sustainably return humans to the lunar surface while establishing a base for future Mars exploration. In recent remarks, Isaacman outlined strategic adjustments to the program aimed at accelerating mission cadence and retaining workforce expertise. “We owe it to the public and to ourselves to present a feasible path forward for Artemis,” he stated, highlighting concerns about team retention post-mission.

The current changes are designed to foster a consistent rhythm of missions, ensuring that NASA’s knowledge and experience do not diminish between launches. “What we’re proposing is ambitious yet practical—a step-by-step approach that leads us towards long-term goals,” Isaacman added.

As Artemis II unfolds, funding remains a critical consideration. The recently released fiscal year 2027 budget proposal from the President calls for reduced funding for NASA, although historical precedent shows that Congress often increases budget allocations for essential programs like Artemis. Isaacman addressed this evolving budget situation with NASA’s workforce, stressing the continued priority of Artemis II alongside other ongoing missions.

“Focus on our objectives and the unique outcomes that NASA can achieve,” he urged in a message to employees, as the mission propels forward into a new era of space exploration.