Science

What scientist discovered that sunspots occur in an eleven-year cycle?

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What is a steep-sided circular depression commonly known as?
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What is the stalk of a stamen called?
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What powered the Bersey Cab?
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Which of these is not a Galilean satellite?
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Launched in 1995, what was the SOHO spacecraft designed to study?
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Who is credited with creating the "Big Bang Theory"?
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What is magma, which has surfaced through a volcanic eruption?
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A hurricane with winds between 110-130 miles per hour is considered what category storm?
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