Uncovering the Footprints of Ancient Galactic Immigration in the Andromeda Galaxy
In a new study, astronomers have uncovered evidence of ancient ‘footprints’ of galactic immigration from the neighboring Andromeda galaxy. By studying the chemical makeup of stars in our Milky Way, the team was able to identify a group of stars with chemical signatures that match those of stars in Andromeda. This indicates that these stars likely originated in Andromeda before they were ‘adopted’ by the Milky Way during a major merger event billions of years ago.
source: Phys.org