After going into space for the first time, astronauts experience a profound shift in perspective known as the overview effect. When they look down on Earth, they no longer see borders, politics, or religion. Instead, they see a beautiful blue marble floating in space where everything on its surface is magically connected. After seeing the Earth from afar, many of humankind’s squabbles and battles seem petty and inconsequential. This incredible shift in perspective can be exhilarating, but also isolating. The four astronauts who were aboard the recent Artemis II mission, NASA‘s first trip around the moon since Apollo 17 in 1972, shared their experiences of the overview effect upon returning home on April 10. Astronaut Reid Wiseman struggled to find words to express his incredible, unique experience. Seeing Earth from space was life-changing for astronaut Reid Wiseman “I’m not really a religious person, but there was no other avenue for me to explain anything or experience anything,” Wiseman said. “So I asked for the chaplain on the Navy ship to just come visit us for a minute. When that man walked in, I’d never met him before in my life, but I saw the cross on his collar, and I just broke down in tears.” Wiseman added that it is “very hard to fully grasp what we just went through.” View this post on Instagram A post shared by Reid Wiseman (@astro_reid) “When the sun eclipsed behind the moon, I turned to [astronaut Victor Glover] and said ‘I don’t think humanity has evolved to the point of being able to comprehend what we are looking at right now,’” Wiseman said. Astronaut Jeremy Hansen also said that he had trouble “trying to find words” to describe his time in space accurately. “But what kept grabbing my attention, when the lighting was right, and we were looking out the window, is that I kept seeing this depth to the galaxy,” he said. “That was mind–blowing for me. The sense I had of fragility and feeling infinitesimally small.” Astronaut Reid Wiseman. Credit: NASA HQ/Flickr A thin blue line separates life on Earth from the darkness of space Another profound realization astronauts have is that Earth’s atmosphere appears remarkably thin from space. “You see the thin blue line of the atmosphere, and then when you’re on the dark side of the Earth, you actually see this very thin green line that shows you where the atmosphere is,” Mission Specialist Christina Koch said, according to NASA. “What you realize is every single person that you know is sustained and inside of that green line, and everything else outside of it is completely inhospitable.” The aurora australis glowing over the Indian Ocean. Credit NASA Johnson/Flickr Ultimately, when someone experiences a major shift in perspective, the important thing is how they incorporate it into their lives. “You come back to sea level, and then you have a choice,” Glover told NASA. “Are you going to try to live your life a little differently? Are you going to really choose to be a member of this community of Earth?” The post Astronaut explains the profound existential pain he felt after returning from moon orbit appeared first on Upworthy.