Outer Space

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Across
  1. 6. two-word phrase for the large grouping of irregularly shaped objects between the fourth and fifth planets
  2. 8. the closest planet to the sun, and the smallest planet
  3. 10. the planet we live on
  4. 11. the planet most famous for its system of rings
  5. 12. a powerful explosion of a star!
Down
  1. 1. formerly the ninth planet, now a dwarf planet, with an unusual elliptical orbit
  2. 2. the largest planet in our solar system, that has colorful swirls of gas on the surface
  3. 3. the fourth planet from the sun covered in iron oxide dust that makes it look red
  4. 4. the second planet from the sun and the hottest planet, with a very toxic atmosphere!
  5. 5. the coldest planet, named for the Roman god of water
  6. 7. two-word name for a part of space where gravity is so dense that nothing, not even light, can escape
  7. 8. two-word name of the galaxy that our solar system is in!
  8. 9. the seventh planet from the sun, which orbits on its side!