Across
- 2. a unit of length equal to the distance that light travels through space in 1 year
- 3. rotational center of a huge galaxy such as the Milky Way Galaxy
- 4. all space and the matter space contains
- 6. a large grouping of stars in space
- 7. to see far away
- 11. a galaxy with a bright center and very little dust or gas
Down
- 1. vast arrangement of electromagnetic waves in relation to their wavelengths
- 5. how fast light travels,300000km/sec
- 8. a death of a large star by explosion
- 9. large cloud of gas and in interstellar space;the location of star formation
- 10. areas of stars that spread out from the center of a spiral galaxy
- 12. bands of dust that appear as dark ribbons against the bright stars in a galaxy