I think the new galaxy is moving away from the Milky Way galaxy. To test this idea, we can use a special tool called a spectroscope to look at the light from the new galaxy and see if the light is shifted towards the red side, which means it's moving away from us!
Use the scenario to answer the question.
An astronomer discovers a new galaxy using a telescope. The astronomer wants to investigate how the galaxy is moving relative to the Milky Way galaxy.
In one or two sentences, make a hypothesis about the movement of the galaxy and explain at least one way to test the hypothesis in kid words
1 answer