What If We Built A Ring World In Space?

The Earth may not be our home forever. Eventually, we may have to leave. What if instead of finding a potentially habitable exoplanet light-years away, we stayed in our Solar System and built a habitat so enormous we could never overpopulate it? What if we built a halo ringworld?

How would we go about building such a thing? Where would we find enough materials to construct this cosmic megastructure? How long would it take before we could move in into our new artificial home?

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"Imagination will often carry us to worlds that never were. But without it, we go nowhere." — Carl Sagan

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Produced by Underknown in Toronto, What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure — grounded in scientific theory — through time, space and chance, as we ask what if some of the most fundamental aspects of our existence were different.

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