Across
- 3. what the planets do to the sun
- 4. laws:how the plants move
- 8. object in space that studies the earth and space
- 10. how much you weigh
- 11. law of universal gravitation:all objects pull on each other
- 14. the dark part of the moon
- 15. effect: use energy from gravitation fields to slingshot an object
- 16. it rotates around the sun
- 18. nova:a ball of light that is a exploding of a big star
- 20. energy: energy that is in motion
- 21. gravity: you are weightless
- 22. of space all of everything
- 23. planets attraction because of their masses
Down
- 1. comet:fast objects to train astronauts
- 2. energy:energy that is stored
- 5. dwarf: a small star with lots of density
- 6. a rock that orbits the sun
- 7. hole:nothing can escape not even light
- 9. of rocks that fall to the earth sometimes
- 12. of the earth
- 13. how much is in an object
- 17. fall: falling without anything
- 19. motion:an object that falls side ways