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Gaia‑Enceladus
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Situations
Milky Way disk flip from Gaia‑Sausage collision
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Latest: Milky Way found larger than thought and may have flipped orientation after ancient collision
Astronomers have built a growing case that a head‑on merger with the ancient dwarf galaxy Gaia‑Sausage‑Enceladus reoriented the Milky Way’s stellar disc by roughly 90 degrees. Early Durham University simulations showed t