Across
- 4. theories about the start and end of the universe.
- 6. Analogy to universal expansion
- 8. Our universe
Down
- 1. One way how to calculate the age of the universe
- 2. The overheating of the universe
- 3. Radiation coming from all directions in space.
- 5. The theory of how the world was created
- 7. A group of planets,stars,and moons