Astronomers discover the giant that shaped the early days of our Milky Way

Some ten billion years ago, the Milky Way merged with a large galaxy. The stars from this partner, named Gaia-Enceladus, make up most of the Milky Way's halo and also shaped its thick disk, giving it its inflated form.

from Top Technology News -- ScienceDaily https://ift.tt/2AFwNnF