Astronomy Crossword Puzzle

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Across
  1. 5. A celestial object, thought to be a rapidly rotating neutron star
  2. 6. Year Distance light travels
  3. 8. Belt of Asteroids
  4. 9. a disk-shaped region of minor planets outside the orbit of Neptune
  5. 10. Stage after the White Dwarf
  6. 12. A system of two stars in which one star revolves around the other or both revolve around a common center
  7. 13. A small body moving in the solar system that would become a meteor if it entered the earth's atmosphere
  8. 14. A system of two stars in which one star revolves around the other or both revolve around a common center
  9. 16. A system of millions or billions of stars
  10. 17. The angular view of a star from different points in the earth's orbit
  11. 18. A small rocky body orbiting the sun
  12. 19. A spherical cloud of small rocky and icy bodies postulated to orbit the sun beyond the orbit of Pluto
Down
  1. 1. a very bright star of large diameter and low density (relative to the Sun)
  2. 2. The remnant of a star that has collapsed, having an extremely dense state with no empty space between its atoms
  3. 3. The main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness
  4. 4. An apparatus for photographing or otherwise recording spectra
  5. 7. A group of stars forming an imaginary image
  6. 10. A region of space having a gravitational field so intense that no matter or radiation can escape
  7. 11. A diffuse cloud of gas and dust surrounding the nucleus of a comet
  8. 15. An explosion occuring in the lifecycle of a high-mass star
  9. 20. A celestial object consisting of a nucleus of ice and dust
  10. 21. All of space and everything in it