New evidence of how and when the Milky Way came together

New research provides the best evidence to date into the timing of how our early Milky Way came together, including the merger with a key satellite galaxy. Using relatively new methods in astronomy, the researchers were able to identify the most precise ages currently possible for a sample of about a hundred red giant stars in the galaxy.

source https://www.sciencedaily.com/releases/2021/05/210517124938.htm