Milky Way Vocab

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Across
  1. 3. old (11–13 billion years), metal-poor stars found primarily in galactic halos and globular clusters
  2. 4. The galaxy that we call home
  3. 9. uses intense, compact radio emission from molecules like Silicon Monoxide (SiO) or Hydroxyl (OH) in the circumstellar envelopes of late-type giants and supergiants to map stellar atmospheres
  4. 11. Galaxies are rotating spirals
  5. 14. loosely bound groups of tens to thousands of young stars formed from the same molecular cloud
  6. 15. an interstellar cloud of dust and gas that shines by scattering and reflecting light from nearby stars
Down
  1. 1. collection of ancient stars
  2. 2. young, metal-rich stars found primarily in the spiral arms and disk of galaxies like the Milky Wa
  3. 5. the hypothetical first generation of stars formed from primordial gas
  4. 6. a region of the sky, roughly 20-25% of the total, that appears empty of distant galaxies to optical telescopes because it is obscured by dust, gas, and stars within the Milky Way's galactic plane
  5. 7. a dense interstellar cloud of dust and gas that appears inky black
  6. 8. a dense, centrally located, mostly old population of stars within a spiral galaxy
  7. 10. a massive, extended, nearly spherical region surrounding a galaxy, containing old stars, globular clusters, and hot gas
  8. 12. interstellar clouds of ionized gas that emit their own light at visible wavelengths,
  9. 13. flattened, rotating systems of gas, dust, or stars orbiting a central body, formed due to the conservation of angular momentum