Across
- 1. Said the universe is cooling and expanding
- 2. Tiny particles that compose atomic particles
- 5. The birth of the universe
- 7. Formulated Theory Of Relativity
- 8. Protons, neutrons, and electrons
- 10. Third element on the periodic table
Down
- 1. First element on the periodic table
- 3. All existing matter and space
- 4. Has two protons
- 6. Ex. Milky Way
- 9. Relic radiation left over from the big bang