How The World's First Telescope Appeared Without the telescope, astronomers would be blind to many marvels of the universe. But how did the device come to be? Science historian Albert van Helden explains how a Dutch spectacle-maker's invention made its way to Galileo, enabling him to spot Jupiter's moons.
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How The World's First Telescope Appeared

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How The World's First Telescope Appeared

How The World's First Telescope Appeared

How The World's First Telescope Appeared

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  • <iframe src="https://www.npr.org/player/embed/104708418/104708404" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
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Without the telescope, astronomers would be blind to many marvels of the universe. But how did the device come to be? Science historian Albert van Helden explains how a Dutch spectacle-maker's invention made its way to Galileo, enabling him to spot Jupiter's moons.

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