The Solar System

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Across
  1. 3. Made from space debris like rock, and orbits around the sun
  2. 4. "Dirty snowball" in space made of frozen gases, dust, and rock
  3. 6. Ball of gas burning billions of miles away. Emits light.
  4. 9. A meteor that made it to Earth
  5. 11. The hard, solid ball of ice and dust in a comet
  6. 12. Acts as a mirror reflecting the sun's light and heat, and might look like a start in the night sky.
Down
  1. 1. The largest planet
  2. 2. Also called a shooting star
  3. 3. Protects the earth from asteroids
  4. 5. The only planet other than Earth whose atmosphere contains some oxygen and water vapour
  5. 7. The smallest planet
  6. 8. The planet furthest from the sun in our solar system
  7. 10. Gas cloud around the nucleus of a comet
  8. 13. The dust particles that trail behind a comet. The dust _____.