They’ve dubbed the fossil galaxy “Hercules,” and they say that its stars were discovered within the Milky Way’s “halo,” the cloud of stars furthest from our galaxy’s brighter center.
“But it accounts for almost half the mass of the entire Milky Way halo,” added Schiavon, a scientist with the Liverpool John Moores University’s Astrophysics Research Institute
Dr.Schiavon and his team could tell the stars of the Milky Way and Hercules apart due to their different chemical composition and velocity
The researchers also stated that this incident makes the Milky Way unusual because other “spiral galaxies had much calmer early lives.”
As our cosmic home, the Milky Way is already special to us, but this ancient galaxy buried within makes it even more special,” Dr.Schiavon said