How many stars are there in the Milky Way Galaxy?
			A: 200,000 B: 200 million C: 200 billion
		Most stars form in tightly packed groups called:
			A: star clusters B: star huddles C: star formations
		A star's mass is the most important thing that determines:
			A: its temperature, luminosity, and color B: how it will live and die C: all of the above
		How do most stars end their lives?
			A: The outer layer swells, and the star becomes a red giant. B: The core shrinks, and the star becomes a white dwarf. C: First a, then b.
		At the end of its life, a very massive star will run out of fuel and explode as a:
			A: superstar B: supernova C: superbang
		How does our star, the Sun, compare to other stars?
			A: more massive than average B: close to average C: less massive than average
		The Sun contains what percentage of the Solar System's mass?
			A: 8.96% B: 68.9% C: 98.6%
		About how long does the Sun's light take to reach Earth?
			A: 8 minutes B: 8 hours C: 8 months
		How long does it take our Solar System to orbit the center of the Milky Way Galaxy?
			A: 25,000 years B: 250,000 years C: 250 million years
		Around the world today, astronomers observe stars using telescopes:
			A: on Earth B: in space C: on Earth and in space