The Terrifying Scale of LARGET STAR in Universe Stephenson 2-18 | 4K Documentary Series

There is a single point in the observable universe where the question of how large a star can grow stops being theoretical and starts becoming an existential reckoning with the boundaries of geometry itself. Most people, even those who consider themselves reasonably curious about the cosmos, have a mental picture of a star that looks something like our Sun — a hot, radiant sphere, yellow-orange, immense by human standards but ultimately comprehensible. The Earth is roughly 93 million miles away from it. Light takes just over eight minutes to make that crossing. We measure that distance in a single, digestible number and our minds accept it.