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

Some of the supernova types. Follow Cosmoknowledge #space #science #education #spacethings #cosmos #universe #cosmoknowledge #astrophysics #astronomy | Cosmoknowledge