Formation of the Solar System

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Across
  1. 3. What is the solar system referred to as?
  2. 4. What star exploded starting the creation of the solar system?
  3. 7. What figure did the "large cloud of dust" turn into after it exploded?
  4. 8. What kind of galaxy do we live in?
  5. 9. About how many stars does the milky way galaxy produce per year?
Down
  1. 1. What gas was the gas the universe was mainly filled with before the galaxy existed?
  2. 2. What fusion created the sun?
  3. 4. Why did the "large cloud of dust" explode?
  4. 5. What is a large cloud of dust, wind and gas in space called?
  5. 6. About how many years ago did the solar system start forming?