Across
- 3. the distance light travels in one year.
- 4. a region on a Hertzsprung-Russell Diagram where most stars appear
- 5. may have a diameter several hundred times that of the Sun and a luminosity nearly 1,000,000 times as great
- 8. the relationship between a star's temperature and its luminosity.
- 10. Online gives you the flexibility to fit your education into your current schedule from anywhere in the world
- 12. a hole that is dark and black
- 14. what we live in today
- 15. what stars like the Sun become after they have exhausted their nuclear fuel.
Down
- 1. they are giants that are red and giant looking
- 2. type of variable star that pulsates radially, varying in both diameter and temperature
- 6. 3.26 light-years
- 7. matter that is dark
- 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.
- 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
- 13. is a scatter plot of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.