Pinwheel Galaxy articles
Can you see the Pinwheel Galaxy with binoculars?
Who discovered that the Milky Way was not the only galaxy?
Does anything exist outside of galaxies?
Who determined the distance to the Andromeda galaxy?
How did astronomers discover that mass was missing from the Milky Way galaxy?
Which type of galaxy contains mostly old dying stars?
How do we measure the mass of galaxies?
