Let's see how you did.

1. Approximately how old is the the Sun?
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2. How many Earths could fit in the volume of the Sun?
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3. The Sun is mostly composed of which gas?
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4. The Sun is approximatley how far from the center of our galaxy?
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5. The Sun creates energy through which process?
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6. How high are temperatures at the center of the Sun?
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7. The Sun accounts for how much of the solar system's total mass?
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8. The visible surface of the Sun is called what?
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9. What is the diameter of the Sun?
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10. What is the nearest star to the Sun?
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Terrible! You scored 0 out of 10.

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