The normal density of the earth is estimated:
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What is the estimated age of our sun?
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How old is the universe?
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The orbital plane of the moon is how many degrees tilted from the ecliptic?
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The diameter of the earth is estimated:
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Geocentric means around
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Name the period that the moon is in for each type of eclipse, lunar and solar
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How many times could a ray of light travel around the earth in one second?
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Which of the following colors bent least while passing through a prism?
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We live in the __________.
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Best Astronomy Quiz For Amateur Scientists
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