Across
- 2. Group of single stars, star systems, star clusters, dust, and gas bound together by gravity.
- 6. Large cloud of gas and dust containing immense volume of material.
- 8. Brightness the star would have if it were at a standard distance from Earth.
- 9. The blue-white core that is left behind cools
- 10. A contracting cloud of gas and dust with enough mass to form a star.
Down
- 1. Brightness as seen from Earth.
- 3. Explosion
- 4. The universe exploded
- 5. Distance light travels in one year.
- 7. All of space and everything in it.