Unit 5a Astronomy: Galaxies

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