Universe

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Across
  1. 3. the displacement of spectral lines toward longer wavelengths
  2. 5. the whole cosmic system of matter and energy
  3. 6. a region of space having a gravitational field so intense
  4. 7. a system of millions or billions of stars
  5. 9. universe we live in
  6. 10. a cloud of gas and dust in outer space
Down
  1. 1. a star that suddenly increases greatly in brightness
  2. 2. a small very dense star that is typically the size of a planet
  3. 4. a theory the universe of creation
  4. 8. a unit of astronomical distance