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Watch: The unprecedented comet landing, explained in 3 minutes

Today the European Space Agency's Rosetta probe landed a robot onto comet 67P/Churyumov-Gerasimenko, which is currently hurtling through our solar system more than 300 million miles away from Earth.

Vox science writer Joseph Stromberg explains Rosetta's journey, and why we would want to land on a comet in the first place.

Read more about the landing here.