space crossword

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Across
  1. 2. what is the milky way
  2. 4. what planet spins the opposite way to earth
  3. 6. what heats the earth
  4. 7. what is the opposite inner
  5. 8. what is the biggest planet in our solar system
  6. 9. what is the planet that we live in
Down
  1. 1. what is the red planet
  2. 3. what is the opposite of outer
  3. 5. what is the coldest planet
  4. 6. what is the second biggest in our solar system