Twatz Words

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Across
  1. 5. They study the universe.
  2. 8. Fire balls.
  3. 9. 4th planet
  4. 11. Rocky objects that orbit the sun.
  5. 12. The first planet to be discovered.
  6. 14. Something we live on.
  7. 15. A invisible line through earth.
Down
  1. 1. Biggest planet.
  2. 2. A way of transport to space.
  3. 3. No longer a planet.
  4. 4. It orbits Earth.
  5. 5. Someone who fly's into space.
  6. 6. A group of thing related that work together as a whole.
  7. 7. Earths Twin.
  8. 10. Something we live in.
  9. 13. Hottest planet.