Stephenson 2-18, the largest known star by radius, is an enormous red supergiant located about 19,570 light-years away in the constellation Scutum. With a radius estimated to be around 2,150 times that of the Sun, it completely dwarfs Earth—so much so that if it replaced our Sun, its surface would extend far beyond the orbit of Saturn. To put this into perspective, Earth is roughly 235,000 times smaller in radius. While Earth is just a tiny marble in cosmic terms, Stephenson 2-18 would appear as

“Stephenson 2-18: The True Giant of the Cosmos!” Have you ever wondered what the largest star in the universe looks like? • Meet Stephenson 2-18, a red hypergiant so massive that it could swallow 5 billion Suns or fit 10 quadrillion Earths inside it! If placed at the center of our Solar System, its edge would reach all the way to Saturn’s orbit. Light itself would need 8 hours just to travel around its surface, compared to only 14 seconds for our Sun. Located about 19,570 light years away in the