This is the most well-known real-world event. In 2015, astronaut spent nearly a year (340 days) on the International Space Station while his identical twin brother, Mark Kelly , remained on Earth.
" Scott drifted past the viewport, the curve of the Earth glowing a pale, fragile blue beneath him. In the silence of the station, the only sound was the steady hum of the life support systems—a reminder that here, breath was a gift. He checked the monitors one last time; the experiment was stable. For a moment, he forgot the mission and simply watched the sun rise over the Pacific, a silent witness to a world he had left behind, yet never felt closer to." Scott in Space – Review - 3rd-strike.com Scott in Space
There is a popular fan-made game titled Scott in Space! which features (the creator of Five Nights at Freddy's ) as a protagonist. This is the most well-known real-world event
: To study how long-duration space travel affects the human body, using Mark as a genetic control. Key Findings : In the silence of the station, the only
: Researchers found Scott's telomeres (caps on chromosomes) lengthened in space but mostly returned to normal after landing.