Across
- 3. a particle is broken off an asteroid or comet orbiting the Sun
- 7. a region of spacetime where gravity is so strong that nothing
- 8. an icy, small Solar System body
- 9. Very large group of stars held together by gravity
- 10. Rotating type of galaxy with a central bulge and spiral arms with stars, gas, and dust.
Down
- 1. Galaxy that is neither spiral nor elliptical.
- 2. Regions of gas and dust plus young stars that wind outward from the central area bulge.
- 4. Oval or egg-shaped galaxy with older stars and little gas and dust.
- 5. Small galaxy containing a few million to a few billion stars
- 6. a solid piece of debris from an object