How a space agency landed on a comet speeding along at 35,000 mph

On November 12, 2014, the European Space Agency successfully landed on a comet speeding at 35,000 mph. The Philae lander was dropped from the Rosetta satellite, which had to travel 4 billion miles over the course of a decade to complete the mission.

Here's how the ESA pulled off such an amazing feat.

Produced by Alex Kuzoian. Special thanks to Jessica Orwig.

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