Review for Unit 2 test tomorrow. 1. What is the Big Bang?. 2. How old is the Universe?. 3. Where in a planetary system do gas planets form?. 4. What are super clusters made up of?. 5. Which particles make up protons?. 6. Which Galaxy are we part of?. 8. How big is the Milky Way?. 9.
Review for Unit 2 test tomorrow