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