FUNTASTIC

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Across
  1. 2. Largest planet in our solar system.
  2. 4. Big feline with spots.
  3. 5. Red planet.
  4. 6. Smallest prime number.
  5. 7. Fastest land animal.
  6. 8. Brightest star in the night sky.
Down
  1. 1. Great Barrier Reef dweller.
  2. 3. Element with the symbol "H."
  3. 4. King of the jungle.
  4. 5. Earth's natural satellite.