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Breakthrough: The Ideas That Changed the World

Glass - A New Wonder Material

Learn how clear glass was born - and gave us spectacles almost 800 years ago.

Aired 04/17/2019 | Rating TV-PG

Breakthrough: The Ideas That Changed the World

Glass - A New Wonder Material

Clip: Episode 1 | 4m 9sVideo has Closed Captions

Learn how clear glass was born - and gave us spectacles almost 800 years ago.

Learn how clear glass was born - and gave us spectacles almost 800 years ago.

Aired 04/17/2019 | Rating TV-PG

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Discovering the Big Bang

Video has Closed Captions

Clip: Ep1 | 5m 28s | In 1923, Edwin Hubble began the manual process of photographing the Andromeda Nebula. (5m 28s)

How Far Are the Stars?

Video has Closed Captions

Clip: Ep1 | 4m 44s | How a New York property boom led to the discovery of the distance to the stars. (4m 44s)

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