Astronomony Crossword.

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Across
  1. 3. Only planet with one moon.
  2. 5. Rotates the opposite way than other planets.
  3. 8. Known as the Moon Champion.
  4. 9. A galaxy containing 100-400 billion stars.
  5. 10. A star at least 4.6 billion years old.
Down
  1. 1. Rains diamonds on the planet.
  2. 2. Two moons called Phobos and Deimos.
  3. 4. Has at least a sunrise every 180 days.
  4. 6. Orbits diagonally to other planets.
  5. 7. Has rings that are hard to see.