What If Aliens Arrived Tomorrow?

Are we alone in the Universe? With more than 100 billion galaxies in the observable universe and at least 500 billion planets in the Milky Way alone, don't you think we should have found something by now?

Even if a tiny percentage of those billions of planets hosted intelligent life, there would have to be tens of thousands of extraterrestrial civilizations out there. Yet, we haven't seen any.

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

If you enjoy What If, make sure to check out our other channel "Underknown":

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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