Across
- 4. Type of radiation left over from the Big Bang
- 6. Bodies used to determine the age of the universe through relation to us
- 7. Main type of energy that was realized during the Big Bang
- 8. Group of planetary systems
Down
- 1. The study of the origins of the universe
- 2. Type of growth that the universe is growing
- 3. Where all matter is contained
- 5. The theory on how the universe began