Grade 9 - Astronomy Unit

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Across
  1. 3. The unit of measurement equal to the distance from the Earth to the Sun
  2. 4. The outcome of a supernova that is more massive than three solar masses
  3. 5. The term for a small, icy object that orbits the Sun
  4. 6. The term for a cloud of gas and dust in space
  5. 8. The term for the region that separates the Inner Planets from the Outer Planets
  6. 9. The term for the process by which a star is born
  7. 11. The shape of our galaxy
Down
  1. 1. The name of our galaxy
  2. 2. The term for an exploding star
  3. 7. The term for a system of two stars
  4. 10. The study of celestial objects and phenomena