The Known Universe

The Known Universe

Escaping Earth
Season 3  |  Episode 7  |  National Geographic  |  August 16, 2016

We've landed on the moon, and launched probes to study planets hundreds of millions of miles away. But when it comes to space travel, we're just beginners. Find out how tough it is defying gravity.

We've landed on the moon, and launched probes to study planets hundreds of millions of miles away. But when it comes to space travel, we're just beginners. Find out how tough it is defying gravity.

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