Milky Way Simulated to Have Flipped Disk After Ancient Dwarf Galaxy Collision
Astronomers from Durham University have discovered that the Milky Way likely flipped its disk orientation by more than 90 degrees about 10 billion years ago. This dramatic reorientation, revealed through supercomputer simulations, was triggered by a head-on collision with a dwarf galaxy known as the Gaia-Sausage-Enceladus, helping explain the galaxy’s unusually slow-rotating stellar halo. For … Read more