Question

1. what will happen when the andromeda galaxy and the milky way galaxy collide sometime in the next four billion years?

○ they will crash together and both explode.
○ the milky way will engulf the other galaxy.
○ they will merge to create an elliptical galaxy.
○ the other galaxy will engulf the milky way.

Explanation:

Galaxies are mostly empty space, so collisions do not cause explosions. Andromeda and the Milky Way are similar in mass, so neither will engulf the other. Instead, their gravitational interaction will merge them into a single, larger elliptical galaxy over time.

Answer:

They will merge to create an elliptical galaxy.