.png)
Adead disk galaxy is a type ofgalaxy that is no longer able toform new stars. These galaxies are usually massive yet compact, fast spinning disk shaped galaxies. Most of these galaxies stopped forming newstars billions of years ago when theuniverse was relatively young in age.[1] These types of galaxies are thought to have been formed by an early phase of intense star birth and evolved into a localelliptical galaxy, like that seen in our modernuniverse.[2]
These types ofgalaxies challengeastronomers' view of theevolution of galaxies and thechronology of the universe, as they expect to find a more chaoticuniverse, with manymerging galaxies and balls of chaoticstars; instead, dead diskgalaxies are flat disks with very little or nostellar formation.[3]
