Across
- 3. group of stars, dust, gas held together by gravity
- 6. ___stars high density composed of neutrons
- 7. near final stage of star evolution;exhausted most or all nuclear fuel
- 8. massive star that has collapsed that gravity prevents the escape of everything, including light
- 9. ___magnitude brightness of a star viewed from earth
- 12. very large, very bright red giant star
- 13. large, cool star of high luminosity
- 14. exploding star that increases in brightness many thousands of times
Down
- 1. star that explosively increases in brightness
- 2. 9.5 trillion km - distance light travels in a year
- 4. group of stars originally named for mythical characters
- 5. cloud of gas/dust in space
- 10. collapsing cloud of gas/dust defined to become a star
- 11. ___magnitude true brightness of stars viewed from distance of 32.6 light years
- 15. emits radio pulses in very regular periods