NASA’s Artemis II mission concluded on April 10, 2026, with the Orion capsule splashing down in the Pacific Ocean after more than nine days in lunar orbit.
The mission marked the first crewed flight around the Moon since 1972 and revived global interest in lunar exploration.
During the flight, astronauts Reid Wiseman, Victor Glover, Jeremy Hansen and Christina Koch reported experiencing the “overview effect,” a psychological shift described as seeing Earth as a fragile, borderless sphere suspended in space.
Christina Koch previously described the phenomenon on the International Space Station, noting that viewing Earth’s thin blue atmosphere from orbit makes one realize all human life exists within a narrow, life-sustaining band.
Victor Glover introduced the related concept of the “sea level effect” upon return, asking whether astronauts would choose to live differently after seeing Earth from space and then observing it again at sea level.
Neuroscientist Claudio Waisburg of the Instituto SOMA told Infobae that the overview effect leaves a lasting impression and cited Michael Collins’ Apollo 11 memoir, in which Collins suggested world leaders’ perspectives would change if they could see Earth from afar.
How the overview effect influences astronaut behavior post-mission
Astronauts who experience the overview effect often report increased motivation to engage in environmental advocacy and humanitarian efforts upon returning to Earth.
The phenomenon has been linked to lasting changes in worldview, reducing perceived divisions based on nationality, religion, or politics and fostering a sense of shared planetary responsibility.
Waisburg explained that the cognitive shift is not fleeting; neural pathways associated with the experience remain altered, reinforcing behaviors aligned with global cooperation and ecological stewardship.
What researchers say about the long-term implications of the overview effect
Researchers suggest the overview effect could inform future spaceflight training programs designed to enhance crew cohesion and Earth-focused mission objectives.
Waisburg noted that whereas the effect is subjective, its consistency across astronauts from different missions indicates a reliable psychological response to viewing Earth from space.
He added that integrating overview effect awareness into pre-flight briefings may help crews internalize mission goals related to climate monitoring and international collaboration.
What is the overview effect?
The overview effect is a cognitive shift in awareness reported by astronauts when viewing Earth from space, characterized by a sense of interconnectedness and the fragility of the planet’s life-supporting systems.
Who reported experiencing the overview effect during Artemis II?
The astronauts Reid Wiseman, Victor Glover, Jeremy Hansen, and Christina Koch reported experiencing the overview effect during the Artemis II mission.