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| 1.
How many planets in our solar system have rings? |
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| 2.
How far is a light year? |
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| 4.
According to popular theory, what is a 'singularity'? |
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| 5.
What is the angle of re-entry used by space craft returning into the Earth's atmosphere? |
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| 6.
What is an Astronomical Unit? |
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| 10.
Which is not a satellite of Neptune? |
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| 12.
What is the closest star to Earth, after our Sun? |
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| 13.
What is a galactic year? |
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| 14.
How long is a galactic year? |
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| 15.
What is the largest moon in our solar system? |
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