Cosmology, Galaxies, and Black Holes & Neutron Stars

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Across
  1. 2. Quasars are a type of “________ galactic nuclei.”
  2. 3. Responsible for slowing the expansion rate of the universe (two words).
  3. 5. The group of galaxies that the Milky Way, Andromeda, and their satellites are a part of.
  4. 6. Radiation from the early hot phase of the universe that is now diluted in energy to the level of microwaves.
  5. 7. High gas density area of spiral galaxies and area of intense star formation.
  6. 11. The limit at which neutrons cannot withstand the gravitational pull and the core collapses. Happens when a star exceeds 1.4 solar masses.
  7. 14. The universe is _________. One of the three principles
  8. 15. Cosmic __________ is the abundance of light elements explained by fusion in the early universe.
  9. 16. A compact neutron star that emits radio waves in rapid pulses while spinning incredibly fast.
Down
  1. 1. Our cosmic neighborhood has a _________ stream of clouds connected by a bridge of diffuse nitrogen gas.
  2. 4. Name of the astronomer who classified the types of galaxies on a tuning fork.
  3. 8. Region of stars around a spiral galaxy with no gas or dust. Stars are old and redder.
  4. 9. The radiation spectrum of a quasar is __________.
  5. 10. One of the big ideas of the Big Bang Model is the idea of _________ space.
  6. 12. Responsible for the expansion of the universe (two words).
  7. 13. Type of galaxies that appear as flat disks of stars, gas, and dust with bulges in their centers. They usually have two or more arms that spiral away from the center bulge.