Here’s How Humanity Could Spread Across the Galaxy


Elon Musk talked recently about his Interplanetary Transport System that he hopes will take humans to Mars within the next ten years. He wants to then use it as a base to explore the galaxy. But manned spaced flight is not the only way. Way before Elon Musk scientists proposed the idea of the von Neumann machines, self-replicating probes that could travel from planet to planet rebuilding themselves from resources they find along the way.

In this Ted Ed talk Roey Tzezana explains how they work while Eoin Duffy provides the visuals.

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