Across
- 3. a rocky or metallic object that orbits the sun
- 4. a mixture of ice, gas, rock and dust that orbits the Sun
- 8. a pattern formed by stars in the night sky
- 11. the tendency of an object to move in a straight line
- 13. an exploding star
- 15. any object that orbits a larger object
- 17. when high tide is lower than normal
- 18. The farthest planet from the Sun.
- 20. a meteor that strikes Earth's surface
- 21. a sphere of hot gas that gives off light & heat
Down
- 1. the nearly circular path an object travels around a larger object
- 2. a complete pass around the sun
- 5. The closest planet to the sun
- 6. the planet we live on
- 7. an object with powerful gravity nothing can escape
- 9. The distance light travels in a year
- 10. the apparent shape of the moon in the sky
- 12. a complete spin on Earth's axis
- 13. when high tide is higher than normal
- 14. The largest planet
- 16. a regular rise and fall of water
- 19. a huge cloud of gas and dust where a star forms