Scientists have found the biggest galaxy ever! Situated about 3 billion light -years away, « Alcyoneus » is a giant radio galaxy that spreads over 16.3 million light-years (5 megaparsecs).
The length of this galaxy is astounding. For perspective, the comoving distance from Earth to the edge of the visible universe is 45.7 billion light-years. Here’s some more perspective – our home galaxy, the Milky Way is about 100,000 light-years long.
