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.

What explanation has been found for the warped shape of the Milky Way galaxy?

How does the warp of the Milky Way galaxy behave in relation to the Galaxy stars?

What event is suggested to have disrupted the disk shape of the Milky Way galaxy?

What did the European Space Agency say about Gaia's contributions to understanding our galaxy?

What was the purpose of the researchers working backward in their study?