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

[Science Daily]

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.

http://feeds.sciencedaily.com/~r/science...141553.htm