makaylacompton739 makaylacompton739

13-04-2024
Geography

contestada

1. What distinguishes a nebula and a star?
2. What kind of reactions provide a star with energy? 3. Which has a higher surface temperature: a blue star or a red star?
4. List the seven main classes of stars, from hottest to coolest.
5. What is a binary star?
6. Compare globular clusters with open clusters.
7. Name the three main types of galaxies.
8. What galaxy do we live in, and what kind of galaxy is it?
9. What is Hubble’s law?
10. According to the Big Bang Theory, how old is the universe?

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