Across
- 2. lanes dark ribbons against the bright stars in a galaxy
- 4. mass compare size of other stars to are sun
- 6. galaxy with central bulge or bar with short arms
- 7. A plot of the surface temperature of stars vs. their luminosity
- 9. of light how fast light travels 300000km/sec
- 10. A galaxy with very little symmetry
- 11. death by a large star by explosion
- 13. A large grouping of stars in space
- 14. A ball of gas and mass held together by gravity
- 16. hole the gravity is stronger than light
Down
- 1. arms area of stars that spread out from galaxy
- 3. All space and matter space contains
- 5. A galaxy with a bright center and little gas or dust
- 8. center of a galaxy
- 11. composed mainly of hydrogen and helium
- 12. Large cloud of gas and dust in interstellar
- 15. model its proportions to the actual object