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