Across
- 2. Unit of measurement for pressure
- 4. Present day, the universe is made up of 4.6% _______ matter
- 6. Process that takes place during matter-antimatter collisions
- 8. Indication of antimatter (2 words)
- 10. Nickname for dark matter (2 words)
- 11. Charge of an antiproton
- 12. First person to predict antimatter
- 14. 72% of the _____ is made up of dark energy
Down
- 1. The force that pulls all matter together
- 3. Invisible type of matter (2 words)
- 5. Hydrogen's antiatom
- 6. Most complex antiatom ever discovered
- 7. Subatomic particle that is born from astrophysical events
- 9. Charge of a positron
- 13. Space that has no matter