Across
- 1. passes through our solar system every 10 years
- 5. held together by dark matter
- 8. holds the universe together
- 9. Weakly Interacting Massive Particles
- 11. published a paper on missing matter
Down
- 2. gets bent by gravity
- 3. slow moving particles
- 4. made of more than one kind of particle
- 6. ____ spectrum doesn't interact with dark matter
- 7. causes our universe to expand
- 10. Hypothetical subatomic particle