Galactic collision may have given rise to Milky Way’s warped shape

The transcript discusses the warped S-shape of the Milky Way galaxy, which rotates with its stars. A study in Nature Astronomy attributes this shape to a collision with the dwarf satellite galaxy Sagittarius, disrupting the Milky Way's disk. The European Space Agency, citing the study's authors, explains that Gaia's mapping of star motions, velocities, and distances helped researchers trace back the collision events with Sagittarius that shaped our galaxy.

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