Across
- 3. Galaxy a galaxy with a bright center and very little dust or gas
- 7. the luminous celestial body around which the earth and other plants revolve
- 8. the death of a large star by explosion
Down
- 1. a large grouping of stars in space
- 2. the distance between any two corresponding points that are adjacent on wave
- 4. Galaxy galaxy with a central bulge or with short arms, if any are present
- 5. of light how fast light travel 300,000/sec
- 6. large cloud of gas and dust interstellar space;
- 9. all space and the matter contains