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