sapce crossword

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Across
  1. 3. Huge system of stars that formed after the universe began
  2. 4. cosmic microwave
  3. 6. all matter and space
  4. 8. Everything physical in the universe is made of this
  5. 9. The first and most common element
Down
  1. 1. The force that pulled matter together to form stars
  2. 2. start of the universe
  3. 5. Energy released in the early universe still detectable today
  4. 7. The universe growing