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.
Hypothesis: The newly discovered galaxy is moving away from the Milky Way galaxy due to the expansion of the universe.
One way to test this hypothesis would be to measure the galaxy's redshift using a spectrometer. If the galaxy's light is consistently shifted towards longer wavelengths, it would indicate that the galaxy is moving away from us, supporting the hypothesis.
Hypothesis: The new galaxy is moving away from the Milky Way galaxy.
One way to test this hypothesis is by observing the galaxy's redshift. If the galaxy is moving away from us, the light it emits will experience a shift towards longer wavelengths, known as redshift, due to the Doppler effect. By analyzing the spectrum of light from the galaxy, astronomers can determine if there is a noticeable redshift, confirming the hypothesis.
Hypothesis: The galaxy may be moving towards or away from the Milky Way galaxy due to the expansion of the universe.
To test the hypothesis, the astronomer can use the Doppler Effect. By analyzing the spectrum of light emitted by stars within the galaxy, they can look for redshift or blueshift. If the galaxy is moving away from the Milky Way, the light will be redshifted, indicating expansion. Conversely, if the galaxy is moving towards the Milky Way, the light will be blueshifted, suggesting contraction.