Across
- 2. Radiation that shows movement away from Earth
- 5. Theory of how the universe was created
- 7. The universe was full of this when it was first formed
- 9. Made up of all matter and space that exists
Down
- 1. The universe is constantly _______
- 3. Makes up 24% of Earth's composition
- 4. Makes up 74% of Earth's composition
- 5. Radiation that shows movement toward the Earth
- 6. Used to study light
- 8. Evidence for the big bang