15. Objects orbiting around the center of the Milky Way obey Kepler’s 3rd Law. This means that:

25. At their centers, all the jovian planets have cores made of:

35. Which of the following statements about Saturn’s rings is TRUE?

19. In recent decades, astronomers discovered stars even cooler than the traditional spectral type M stars recently. Astronomers gave these cool stars a new spectral type, L. If you wanted to go out and find more such type L stars, what kind of instrument would it be smart to use?

8. Why are astronomers much more interested in the luminosity of a star than its apparent brightness?

6. More than 75% of the known asteroids:

20. Ninety percent of all stars (if plotted on an H-R diagram) would fall into a region astronomers call:

1. Which of the following is NOT a correct statement about the ways the jovian planets differ from the terrestrial planets?

23. The element that can act like a metal when it is under tremendous pressure and is probably responsible for Jupiter and Saturn’s magnetism is:

1. If you want to find stars that are just being born, where are the best places to search?