The Largest Galaxy Ever Seen Has Just Been Discovered
The radio lobes of Alcyoneus. (Oei et al., arXiv, 2022).Astronomers have just discovered an absolute beast of a galaxyHiding some 3 billion light-years away, Alcyoneus is a giant radio galaxy reaching five megaparsecs into space. That is 16.3 million light-years long and represents the biggest recognized structure of galactic origin.The finding highlights our poor...