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Galileo was the first scientist to do which of the following? A. estimate the speed of light B. propose the heliocentric theory C. discover radioactivity D. define and measure speed E. invent the reflecting
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Galileo was the first scientist to do which of the following? A. estimate the speed of light B. propose the heliocentric theory C. discover radioactivity D. define and measure speed E. invent the reflecting telescope

User Jenette
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The answer to this question is a the estimate the speed of light
User Lugeno
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