Unit 5 Galaxies/Universe

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Across
  1. 1. stellar population that inhabits the rotating, flattened region of our Galaxy.
  2. 8. stage of the Big Bang where in a tiny fraction of a second, space expanded rapidly due to annihilation
  3. 9. type of galaxies that vary from nearly circular to very elongated. They possess comparatively little gas and dust, contain older stars and are not actively forming stars anymore
  4. 11. stellar population that inhabits the far outer regions of the Galaxy, on long ellipsoidal orbits.
  5. 13. the scientific theory that the Universe as we know it was created in a massive explosion that not only created the majority of matter, but the physical laws that govern our ever-expanding cosmos.
Down
  1. 2. stage of the Big Bang where accretion begins
  2. 3. stage of the Big Bang where matter and energy are are “locked” in the form they are
  3. 4. stage of the Big Bang where it is infinitely dense and infinitely hot
  4. 5. stellar population that is restricted to the rounded, central region of the Galaxy, also rotating.
  5. 6. type of galaxies that appear as flat, blue-white disks of stars, gas and dust with yellowish bulges in their centers.
  6. 7. what invisible presence affects how stars move within galaxies, how galaxies tug on each other and how matter clumped together in the early universe.
  7. 10. type of galaxies that tend to be small, dwarf galaxies that lack any distinguishable shape
  8. 12. stage of the Big Bang where dark energy takes over