Across
- 4. lanes of young stars, gas, and dust that wind outward from the central region of spiral galaxies
- 6. type of cluster of galaxies containing very few galaxies
- 8. a collection of many clusters of galaxies bound together by gravity
- 9. type of galaxy that appears in a shape similar to that of a flying saucer
- 14. type of cluster that is large, spherical, made of older stars. Usually found in the outer regions of a galaxy.
- 15. a collection of galaxies bound together by gravity
- 16. the gradual accumulation of matter by an object in space, usually caused by gravity.
- 19. an occurrence when the gravity of an object bends the light of another object around it.
Down
- 1. a cluster of 40 galaxies, including the Milky Way
- 2. type of galaxy that appears as a flat disk that forms when the center of a spiral galaxy is elongated into a bar shape; two arms containing many stars swirl out from either end of that bar.
- 3. a spherical distribution of clusters, starts, and possible dark matter that surrounds a galaxy
- 5. the center of a spiral galaxy consisting of starts in the shape of a flattened sphere that circles a black hole
- 7. a flattened combination of matter containing stars, gas, and dust in a spiral galaxy
- 10. type of cluster of galaxies containing many galaxies
- 11. type of galaxy with an oval shape, contains little stellar matter, and has no spiral arms
- 12. undetectable within the universe believed to exhibit a strong gravitational force.
- 13. the recession of galaxies caused by the expansion of the universe.
- 17. type of cluster that is a loosely bound group of young stars in the disk of a galaxy
- 18. barrel spiral galaxy in which our solar system resides