Yoselin's Vocabulary Crossword

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Across
  1. 2. a cloud of interstellar dust and gas that shines by scattering and reflecting the light from nearby stars
  2. 4. centered on the Milky Way's disk, where dense interstellar gas and dust block visible light
  3. 6. dense, bar-shaped central hub of billions of old, redder stars spanning roughly 10,000 light-years.
  4. 8. old , poor stars found primarily in the halo and bulge of galaxies.
  5. 10. a flattened, rotating structure of gas, dust, and stellar material circling a center.
  6. 11. spherical atmosphere of old stars, and hot gas surrounding the bright, flat disk of our galaxy.
  7. 12. young, metal-rich stars—including our Sun.
  8. 13. cloud of interstellar gas, mostly hydrogen and has its own glow.
Down
  1. 1. A wave phenomenon in which the density fluctuations of a physical quantity propagates.
  2. 3. a giant, glowing cloud of dust and gas, hydrogen and helium.
  3. 5. the hypothetical first generation of stars made 13.8 billion years ago
  4. 7. a loose, gravity-bound group of hundreds or thousands of young stars that formed together from the same cosmic cloud and are found in the disk of a spiral galaxy.globularcluster
  5. 9. barred spiral galaxy.