Across
- 3. spiral galaxy where we live
- 5. an object that revolves around another object in space
- 9. celestial body made up of gas that produce their own light
- 10. any object in space
- 11. a measure of the amount of space between two objects
- 14. space rocks that orbit the sun
- 15. everything is inside of this
- 16. an instrument that magnifies or makes distance objects appear larger
- 19. the average distance from Earth to the sun
Down
- 1. the measurement of the pull of gravity
- 2. huge collection of stars
- 4. space rock that has entered Earth's atmosphere
- 6. a space rock that hits Earth's Surface
- 7. the amount of matter in something
- 8. a celestial body that orbits the sun and doesn't make its own light
- 12. irregular pieces of rock that move through space
- 13. a group of stars that have been identified and named.
- 17. made up o dirt, ice and gas nicknamed dirty snowball
- 18. the basis for our solar system and sustains life on Earth