Across
- 4. "The spinning coin" analogy
- 5. Light and its particles
- 6. Is it relative or an illusion?
- 9. It's there but you can't see it or detect it or do anything with it
- 10. 7 billion dollars for a particle?
- 12. Who's cat is it anyway?
- 13. Twice as noble
Down
- 1. The scientist who's the king of birds
- 2. Nidevellir from the avengers
- 3. The weakest force
- 7. The fourth state that everyone forgets..
- 8. The vacuum cleaners of space
- 11. The cur(i)e to radioactivity