Stars Galaxies and the Universe

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Across
  1. 3. the distance light travels in one year.
  2. 4. a region on a Hertzsprung-Russell Diagram where most stars appear
  3. 5. may have a diameter several hundred times that of the Sun and a luminosity nearly 1,000,000 times as great
  4. 8. the relationship between a star's temperature and its luminosity.
  5. 10. Online gives you the flexibility to fit your education into your current schedule from anywhere in the world
  6. 12. a hole that is dark and black
  7. 14. what we live in today
  8. 15. what stars like the Sun become after they have exhausted their nuclear fuel.
Down
  1. 1. they are giants that are red and giant looking
  2. 2. type of variable star that pulsates radially, varying in both diameter and temperature
  3. 6. 3.26 light-years
  4. 7. matter that is dark
  5. 9. is the science of the origin and development of the universe. Modern astronomy is dominated by the Big Bang theory, which brings together observational astronomy and particle physics.
  6. 11. is the apparent displacement or the difference in the apparent direction of an object as seen from two different points not on a straight line with the object
  7. 13. is a scatter plot of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.