SOLAR SYSTEM!!

123456789101112131415161718
Across
  1. 2. The event where the Sun and Moon overlap each other
  2. 7. four The hours it takes for the the earth to orbit the Sun
  3. 8. The smallest planet
  4. 9. The planet made out of 'cheese'
  5. 10. Another word for the Sun
  6. 12. The branch of science that explored space
  7. 17. The celestial being that every other planet orbits around
  8. 18. The planet that will be engulfed in the future that begins with the M
Down
  1. 1. The force that keeps our feet on the ground
  2. 3. The explosion of a star
  3. 4. The imaginary line that divides the Northern and Southern hemisphere
  4. 5. moon When a werewolf will transform
  5. 6. The layer of gas around the earth
  6. 11. The percent that the Sun's illumination increases by every 1 billion years
  7. 13. The name for the Sun's explosion
  8. 14. The thing wraps around Saturn
  9. 15. The planet that may think we will soon live on
  10. 16. The hottest planet