Across
- 3. laws of the universe
- 5. study of outer-space
- 11. force that causes things to fall
- 14. what might shock you
- 15. an attempt to test an idea
- 16. smartest known scientist
- 18. closest star to us
- 19. how fast something is going
Down
- 1. what lights up the world
- 2. our galaxy
- 4. a group or pattern of stars
- 6. what you feel when something pushes on you
- 7. everything that exists physically
- 8. calculations required for science
- 9. pertaining to the tiniest aspects of the world
- 10. an element with one proton
- 12. tiny building block of matter
- 13. measurement of moments that pass
- 16. can be kinetic or potential
- 17. core of an atom