Previews + Extras
Glass - A New Wonder Material
S1 E1 - 4m 9s
Learn how clear glass was born - and gave us spectacles almost 800 years ago.
How Far Are the Stars?
S1 E1 - 4m 44s
How a New York property boom led to the discovery of the distance to the stars.
Discovering the Big Bang
S1 E1 - 5m 28s
In 1923, Edwin Hubble began the manual process of photographing the Andromeda Nebula. He spent many nights at the Hooker telescope collecting data and discovered that Andromeda was not a cluster of stars in our own galaxy but in fact a separate galaxy.
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