Across
- 2. relating to the universe or cosmos
- 3. small dense core remnant of a dead star
- 5. is the expanse that exists beyond Earth and its atmosphere and between celestial bodies
- 9. a component of the universe whose presence is discerned from its gravitational attraction rather than its luminosity
- 10. luminous ball of gas
Down
- 1. theory that the universe will explosively expand
- 4. the science of the origin and development of the universe
- 6. the whole cosmic system of matter and energy
- 7. systems of stars,gas,and dust
- 8. a belief, policy, or procedure proposed or followed as the basis of action