Universe of vocabulary CarmenWallace Period 5th

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Across
  1. 3. Way Galaxy-The huge grouping of stars that rotate around a center of which the Sun and the solar system are a part.
  2. 6. luminous celestial body around which the Earth and other planets revolve;composed mainly of hydrogen an helium.
  3. 9. Galaxy-A galaxy that does not fit into any category;a galaxy with very little symmetry.
  4. 10. center-Rotational center of a huge galaxy such as the Milky Way Galaxy.
  5. 11. Diagram-A plot of the surface temperature (color) of stars vs. their luminosity (brightness).
  6. 14. Galaxy-A galaxy with bulge in the center and very distinct long arms winding around the center.
  7. 16. Lanes-Bands of dust that appear as dark ribbons against the bright stars in a galaxy.
  8. 17. Hole-An object with more than four solar masses squeezed into a ball only 10km across whose gravity is so strong that even light can not escape.
  9. 18. Model-A representation of an object that is accurate in its proportions to the actual object.
Down
  1. 1. space and the matter space contains.
  2. 2. Galaxy-A galaxy with a bright center and very little dust or gas.
  3. 4. Galaxy-Galaxy with a central bulge or bar with short arms,if any are present.
  4. 5. of Light-How fast light travels,300,000km/sec.
  5. 6. Mass-Used in astronomy as a standard unit to compare the size of other stars with our Sun.
  6. 7. large grouping of stars in space.
  7. 8. Arms-Areas of stars that spread out from the center of a spiral galaxy.
  8. 12. cloud of gas and dust in insterstellar space;the location of star formation.
  9. 13. death of a large star by explosion.
  10. 15. self-luminouse celestial body consisting of a mass of gas held together by its own gravity in which the energy is generated by nuclear reactions in its interior.