Galaxy Key Terms

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Across
  1. 6. Objects used to map spiral armsHalo Spherical region of a spiral Galaxy containing a thin scattering of stars.
  2. 7. Corona Low-density extension of the halo of a galaxy
  3. 8. Galaxy A Galaxy that has a wooly appearance
  4. 10. Star Formation The process by which the birth of stars compresses the surrounding gas clouds
  5. 12. Matter - Neither emitting nor absorbing light
  6. 13. Component Part of the Galaxy including all matter in a spherical distribution around the center
  7. 14. The procedure for finding the mass of a Galaxy from it's rotation curve
Down
  1. 1. Galaxies A Galaxy that is a strong source of radio signals
  2. 2. Hypothesis the milky way galaxy formed by gravitational collapse of a single large spinning cloud of gas
  3. 3. Galaxies Galaxies that is a source of excess radiation , usually radio waves , x-rays and gamma rays
  4. 4. Scale The combined calibration of distance indicators used by astronomers to find the distance to remote galaxies
  5. 5. The milky way Galaxy and other large galaxies formed mostly by collisions
  6. 9. indicators Object of known brightnessNeither emitting nor absorbing light that astronomers use to find distance
  7. 11. Galaxies A bright blue galaxy in which many new stars are forming , it's thought to be caused by collisions between galaxies.