Across
- 4. what is an example of how galaxies move apart as the universe expands
- 5. What do scientists think the universe will continue to do without enough
- 8. what do scientists was released in The Big Bang
Down
- 1. The universe will begin shrink if there is enough _____
- 2. What is a common theory of how the universe formed
- 3. What is the milky way
- 6. what will happen to stars over time
- 7. What is the Big Bang theory an ____