Stellar Archeology Traces Milky Way's History
Thursday, May 31, 2012 - 16:38
in Astronomy & Space
Unfortunately, stars don't have birth certificates. So, astronomers have a tough time figuring out their ages. Knowing a star's age is critical for understanding how our Milky Way galaxy built itself up over billions of years from smaller galaxies. But a Baltimore astronomer has found the next best thing to a star's birth certificate.