Across
- 2. Theoretical physicist Stephen's surname
- 4. Twinkle in the night sky
- 6. The whole universe
- 7. Power or force
- 9. Measure of moments
Down
- 1. Blue planet in the solar system
- 3. Solution to a problem
- 5. Study of nature and the universe
- 8. Person of extraordinary intelligence
- 9. Scientific principle