Across
- 1. our home galaxy
- 3. How fast light travels,300,000km/sec
- 4. A galaxy without a shape
- 6. the location of star formation
- 7. a plot of surface temperature(color)of stars vs. their luminosity
- 11. used in astronomy as a standard unit
- 12. a galaxy that looks like a spiral
- 14. All space and the matter space contains
- 15. a proportional model
- 16. bands of dust
- 17. A large grouping of stars in space
- 18. a ball that sucks everything in
Down
- 2. a galaxy with a central bulge
- 5. rotational center of a huge galaxy
- 8. a galaxy with a bright center
- 9. a large hot ball of gas which generates energy/light
- 10. composed mainly of hydrogen and helium(our _____.)
- 13. The death of large star by explosion