The Universe By:Shayla Moore

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Across
  1. 1. All space and the matter space contains
  2. 5. Used in astronomy as a standard unit to compare the size of other stars with out Sun
  3. 7. Areas of stars that spread out from the center of spiral galaxy
  4. 8. A theory that says the Universe began as a small point that expanded rapidly about 13.7 billion years ago
  5. 10. The death of a large star by explosion
  6. 11. Large cloud of gas and dust
  7. 13. Rotational center of a huge galaxy such as the Milky Way Galaxy
  8. 14. An object with more than four solar masses squeezed into a ball only 10km across whose gravity
  9. 15. A galaxy with bright center and very little dust or gas
Down
  1. 1. All space and matter space contains
  2. 2. The luminous celestial body around which the Earth and other planets revolve
  3. 3. A plot of the surface temperature(color)of star vs. their luminosity(brightness)
  4. 4. Beginning point at which something begins,or from which it derives
  5. 5. A self-luminous celestial body consisting of a mass of gas held together by its own gravity
  6. 6. A large grouping of stars in space
  7. 9. Used in astronomy as a standard unit to compare the size of other stars with our Sun
  8. 10. How fast light travels 300,000km
  9. 12. A representation of an object that is accurate in its proportions to the actual object
  10. 16. A unit of length equal to the distance that light travels through space in 1year
  11. 17. An instrument that collects light or other electromagnetic
  12. 18. Bands of that appear as dark ribbons against the bright stars in the galaxy