Space Crossword

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Across
  1. 1. A streak of ice, rock and gas that appears in the sky
  2. 4. The hottest planet
  3. 6. A ball of rock, magma and gas
  4. 8. The largest planet
Down
  1. 2. An object that orbits the Earth
  2. 3. A leftover chunk of rock from the formation of the planets
  3. 5. A bright burning ball of gas
  4. 7. The smallest planet