Originally posted on TED Blog:

Photo: James Duncan Davidson

Superstring theorist and physicist and the co-founder of the World Science FestivalBrian Greene splits his visually rich, action-packed talk into three distinct sections, all in the name of convincing us of the existence of the multiverse, the possibility that way beyond the earth, the milky way, we’ll find that our universe is part of a vast complex of universes we call the multiverse.

Part One: The history and mystery

In 1929, the astronomer Edwin Hubble discovered that distant galaxies were rushing away from us; that space was stretching and expanding. This was a revolutionary idea; the prevailing wisdom to that point had been that the universe was static. One thing everyone agreed on: the expansion of the universe must be slowing down over time.

Fast forward to the 1990s, when two teams of Nobel Prize-winning astronomers aimed to measure the rate at which the expansion of…

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