Rotating galaxies

An illustration illustrating the rotation of neutral hydrogen (right) in galaxies located in an elongated galaxy (middle), with the galaxies showing a coherent overall rotational motion that follows the large-scale cosmic fabric (left).

One of the largest rotating structures ever seen: a giant cosmic filament where galaxies spin “in the same direction”

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Spiral galaxies photographed by Webb rotating in the same direction relative to the Milky Way (in red) and in the opposite direction (in blue). Credit: Shamir, Lior, Monthly Notices of the Royal Astronomical Society, 2025 under CC BY 4.0

Does the mystery of galaxy rotation challenge the Big Bang assumptions?

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A new study has found that two-thirds of distant galaxies rotate clockwise, a surprising imbalance compared to the random distribution that would have been expected.
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