How do astronomers know about the future collision of Andromeda and the Milky Way?(1 point) Responses Astronomers have observed their movements over time. Astronomers have observed their movements over time. The Milky Way has changed course to head toward Andromeda. The Milky Way has changed course to head toward Andromeda. The two galaxies have collided previously. The two galaxies have collided previously. All galaxies will collide at some point.

Question

How do astronomers know about the future collision of Andromeda and the Milky Way?(1 point) Responses  Astronomers have observed their movements over time. Astronomers have observed their movements over time.  The Milky Way has changed course to head toward Andromeda. The Milky Way has changed course to head toward Andromeda.  The two galaxies have collided previously. The two galaxies have collided previously.  All galaxies will collide at some point.

GPT 3.5 · Answer

Astronomers know about the future collision of Andromeda and the Milky Way primarily because they have observed their movements over time. This provides the necessary data to predict that the two galaxies are on a collision course.