Origin of the Universe

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Across
  1. 2. What does origin mean?
  2. 3. the closest planet to the sun
  3. 8. an object that orbits a larger object
  4. 9. the largest planet
  5. 11. a random shaped object made from rock and metal that orbits a star
  6. 12. Jupiter, Saturn, Neptune and Uranus are made out of this substance
Down
  1. 1. naturally occurring objects outside earths atmosphere
  2. 4. How many years old is the universe?
  3. 5. the name of our galaxy
  4. 6. Which formed first - stars or planets?
  5. 7. What is the name of the theory which describes the origin of the universe?
  6. 10. the name of our solar system