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| 1. Approximately how long does it take for light emitted from the sun to reach the earth? | |
| 2. Although it used to be widely accepted that there were 9 planets in our solar system, in 2006 the International Astronomical Union reduced the number to 8, disqualifying which one as a planet? | |
| 3. Which is not one of Jupiter’s moons? | |
| 4. What is a theorized region of outer space possessing so much concentrated mass that no nearby object—not even light—can escape its gravitational pull? | |
| 5. The Crab Nebula is the result of what type of cataclysmic explosion, which occurs at the end of a star’s lifetime when its nuclear fuel is exhausted and its mass no longer is supported by the release of nuclear energy? | |
| 6. What celestial objects are a mixture of ices (both water and frozen gases) and dust—often referred to as “dirty snowballs”—and have highly elliptical orbits around the sun? | |
| 7. Which constellation is not viewable from most of the earth’s Northern Hemisphere (north of 27° north latitude)? | |
| 8. It takes over 25,000 years for the earth to wobble once. During that cycle, the north pole points to consecutive points around a great circle in the northern sky. This phenomenon is referred to as what? | |
| 9. The Perseid Meteor Shower, observable in mid-August each year, originates from what comet? | |
| 10. Besides the sun, what is the brightest star observable from earth? |
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