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The Oldest Stars in Our Galaxy Predate The Gaia Sausage, Astronomers Find – ScienceAlert
A new technique for determining the ages of stars in the Milky Way has given us tighter constraints for an ancient galactic collision.
A new technique for determining the ages of stars in the Milky Way has given us tighter constraints for an ancient galactic collision.
By closely examining the internal oscillations and chemical composition of 95 red giant stars, a team of astronomers led by the University of Birmingham in the UK has determined that the Milky Way’s biff with a mysterious small galaxy known as Gaia-Enceladus, or the Gaia Sausage, took place around 10 billion years ago.
They also found that many of the stars in the…
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