Across
- 1. model~ *Representation of an object is accurate in its proportion.
- 4. *A large group of stars in space.
- 6. *A plot of the surface temperature (color) of stars vs. their luminosity (brightness).
- 8. *Object with more than 4 solar masses whose gravity is so strong that not even light can escape.
- 10. *areas of stars that spread through center of spiral galaxy.
- 12. *huge group of stars rotating around center.
Down
- 1. *Galaxy with distinct long arms and a bulge in the center.
- 2. *Pieces of dust that appear as dark ribbons.
- 3. *astronomy as standard unit to compare to size of stars with our sun.
- 4. *Galaxy with very little dust or gas and a bright center.
- 5. *A stars death of explosion.
- 6. *rotational center of huge galaxy such as milky way.
- 7. *how fast light travels 300,000km/sec.
- 8. *A subsistence in the sky consisting of gas held together by its own gravity.
- 9. *All space and the matter that space contains.
- 11. *A large cloud of gas & dust in interstellar space;the location of star formation.
- 12. *Luminous body around; the earth and other planets revolve; composed mainly of hydrogen and helium.