Keep Reading …. Originally posted on https://www.skyandtelescope.com/astronomy-news/andromeda-collided-galactic-sibling-billions-years-ago/
A new study says our neighbor galaxy’s big stellar halo and stellar evolution are due to a major collision that ended 2 billion years ago.
The post Andromeda Collided with Galactic Sibling Billions of Years Ago appeared first on Sky & Telescope.
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