#DeadGalaxy #Nature #space #MilkyWay #stars #BigBang #Elliptical
As mentioned in the June 22 issue of journal Nature, Hubble telescope photographed a dead disk-shaped galaxy that stopped forming stars just a few billion years after the Big Bang. This it the first evidence showing that dead galaxies could evolve from a Milky Way shaped disk into a giant elliptical galaxy.
It has been noted that elliptical galaxies have older stars while spiral-shaped galaxies have young blue stars. The dead galaxy discovered is about half the size of Milky Way, and three times as massive. The galaxy is also spinning at twice the speed than that of Milky Way.
The discovery determined out the ages of stars, rates at which the stars were formed and the stellar mass, however the researchers still lack information on why the galaxy stopped forming stars, and how do such galaxies evolve into elliptical galaxies.
Dead galaxies? I didn’t know there was such a thing.