Across
- 2. bunch of stars with no pattern
- 5. the idea of the universe
- 6. the main part of an hr diagram
- 7. the hotness or coldness of something
- 10. brightness
- 11. blank arms
- 12. a system of stars, gas, and dust
- 13. our gallaxy
- 14. round-like shape
Down
- 1. the cycle of a star
- 3. it shows the range of electromagnetic radiation
- 4. the impact of a forces
- 8. a hole of nothingness
- 9. when objects to appear to shift toward the red
- 10. a distance light travels in a year