The Milky Way has two disks, the thin disk where most of the stars dwell, and the thick disk, populated by much older stars. The ESA's Gaia mission showed us that the thick disk rotates more slowly than the thin disk. The culprit, according to powerful simulations, was a disk flip in the MW's past, ...
The Milky Way Flipped its Disk Billions of Years Ago
By system
July 22, 2026 •
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Original source:
Universe Today
