as an eight grader writ 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.
Hypothesis: The new galaxy is moving away from the Milky Way galaxy due to the observation of a redshift in its spectral lines. To test this hypothesis, the astronomer can utilize the Doppler effect by analyzing the galaxy's spectral lines to determine if they are exhibiting a shift towards longer wavelengths, indicating a redshift and hence, movement away from the Milky Way.
