How do astronomers know about the future collision of Andromeda and the Milky Way?(1 point) Responses The Milky Way has changed course to head toward Andromeda. The Milky Way has changed course to head toward Andromeda. Astronomers have observed their movements over time. Astronomers have observed their movements over time. 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  The Milky Way has changed course to head toward Andromeda. The Milky Way has changed course to head toward Andromeda.  Astronomers have observed their movements over time. Astronomers have observed their movements over time.  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 because they have observed their movements over time.