The planets

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Across
  1. 2. The only other place besides Earth that man has walked on.
  2. 4. There are eight of these in the solar system.
  3. 6. Earth takes this long to orbit the Sun.
  4. 10. Astronauts ride in these to space.
  5. 12. The sun is a yellow one of these.
  6. 13. The furthest planet from the Sun.
  7. 14. The closest planet to the Sun.
  8. 17. The second closest planet to the Sun.
  9. 19. The fourth planet from the Sun after Earth.
  10. 20. Planets close to the sun spin at this speed.
Down
  1. 1. It is made up of eight planets.
  2. 3. Takes Earth this long to spin completely around on its axis.
  3. 5. Planets furthest from the sun spin at this speed.
  4. 7. The sun is a star this size.
  5. 8. Planets rotate around the sun.
  6. 9. The largest planet.
  7. 11. The sixth planet from the Sun after Jupiter.
  8. 15. Third closest planet to the Sun that humans live on.
  9. 16. The planet second furthest from the Sun.
  10. 18. The star that is the center of the solar system.