| The Sun |
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1 million
The sun is big. How many Earths could fit inside of it?
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4.5 billion years
About how old is the sun?
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Nicolaus Copernicus
Who wrote a book about a heliocentric (sun-centered) model of the solar system?
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It will become a red giant.
What will happen to the sun in about 5 billion years?
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8 minutes
About how long does it take light to reach Earth from the sun?
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