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The search for our solar system's ninth planet

Mike Brown  TED@NAS  November 2019
Could the strange orbits of small, distant objects in our solar system lead us to a big discovery? Planetary astronomer Mike Brown proposes the existe…
This talk was presented at a TED Institute event given in partnership with The Kavli Foundation, the Simons Foundation and the National Academy of Sciences. TED editors featured it among our selections on the home page. Read more about the TED Institute.
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