Across
- 3. the first type of crescent in the moon phase cycle
- 7. the center of the sun
- 8. the force of attraction between two objects
- 9. the outermost layer of the sun's atmosphere
- 11. huge, reddish loops of gas that link sunspots
- 15. the total number of moon phases
- 16. the reason why Earth orbits the sun (has to do with gravity)
- 18. atoms combine to form heavier atoms which happens in the sun's core
Down
- 1. the closest planet to the sun
- 2. the reason why the moon orbits Earth (has to do with gravity)
- 4. the outer four planets (large, made of gas)
- 5. one of five dwarf planets in the solar system
- 6. the orbiting of Earth around the sun
- 10. the type of eclipse where Earth blocks light from the moon at night
- 12. the spinning of earth on its axis
- 13. areas of cooler gas on the sun's surface that appear as dark spots
- 14. the shape of the 4th and 6th moon phases (2nd word)
- 17. the first four planets (small, dense, rocky)
- 19. the planet that is covered in liquid water
- 20. the type of eclipse where the moon blocks light from Earth during the day