Breakthrough: The Ideas That Changed the World

Discovering the Big Bang

Clip: Episode 1 | 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.

Aired: 04/17/19

Rating: TV-PG

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