Where Did the Moon Come From? A New Theory

Sarah Stewart TED talk
Sarah T. Stewart speaks at TEDSalon: U.S. Air Force - Imagine If, February 21, 2019 at the TED World Theater, New York, NY. Photo credit Dian Lofton/TED

The Earth and Moon are like identical twins, made up of the exact same materials — which is really strange, since no other celestial bodies we know of share this kind of chemical relationship. What's responsible for this special connection? Looking for an answer, professor Sarah Stewart discovered a new kind of astronomical object — a synestia — and a new way to solve the mystery of the Moon's origin. Watch the talk on TED.com.

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