Across
- 1. force that attracts all objects toward each other
- 8. a body that orbits a planet
- 10. a giant ball of superheated gas (H & He)
- 11. when an object in the sky comes between the sun and a third object
- 12. different shapes of the moon that you see
- 14. pattern or group of stars
- 16. cold mixture of dust and ice with a long tail
- 18. path followed by one object around a second object
- 19. an object that orbits the sun large and rounded
- 20. movement of one object around another
Down
- 2. imaginary line that passes through the center of Earth
- 3. tendency of an object to resist change in motion
- 4. darkest part of an eclipses shadow
- 5. Sun centered universe
- 6. one day per year when the sun appears highest in the sky
- 7. Earth centered universe
- 9. when neither hemisphere is tilted toward the sun
- 13. orbit of a planet that is oval
- 15. spinning of Earth on its axis
- 17. streak of light produced when a meteoroid burns