Science
What famous scientist introduced the concept of "space-time"?
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What is the substance that gives plants their green color?
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What are the "Big Dipper" and "Orion" examples of in the night sky?
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In which of the following animals does the male give birth to the young?
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Which aeronautical term is a moveable surface on an aircraft which controls its motion?
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Who was the first President of the "Planetary Society", an organization of amateur astronomers?
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How long does it take for Saturn to rotate completely on its axis (a typical day)?
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Which planet is named for the Roman goddess of love?
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