Evidence indicates that galaxies are

The Big Bang theory

The known universe is approximately

To find out if a star is moving away from you, you would observe

Which of the following is not a known shape of a galaxy?

Our milky way galaxy is

What holds globular clusters of stars together?

Star clusters vary in the number of stars they contain. What is the approximate range for the number of stars found in an open cluster?

Which type of galaxy holds the oldest stars in the universe?

A nebula is

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