Question1: Our Milky Way has two different populations of stars, one old and metal-poor, the other young and metal-rich. What might you guess this means for the history of the Milky Way?
Our Milky Way has two different populations of stars, one old and metal-poor, the other young and metal-rich. In terms of the Milky Way’s history I guess this means that much like our planet our galaxy is constantly changing; beginning and ending. You see evidence of this when examining the two different population types. Population I stars are 0 to 10 billion years old and follow a more consistent orbit. These stars are also known to have heavier elements or metal than Population II stars. Population II stars are considered “old stars” with ages range from 10 to 13 billion years old and follow a much more random orbit pattern. These stars are also considered to be metal-poor the opposite of Population I stars. I think this is amazing proof that life throughout the universe begins and ends much like our lives here on earth.