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The Subaru Seminar is usually held in Room 104 of the Hilo Base Facility, adjacent to the main lobby. Everyone is welcome to attend. If you are interested in giving a seminar, please contact Subaru seminar organizers (Tae-Soo Pyo, Sherry Yeh, Nagayoshi Ohashi) by email : (please change"_at" to @).

March 03, Thursday, 03:00 pm in 104

" The Search for Planet Nine "

Michael Brown


We have recently suggested that a giant planet well beyond Neptune is required to explain unexpected clustering in the orbits of very distant and eccentric Kuiper belt objects. I will present the evidence for this clustering as well as the dynamical evidence that a giant planet is responsible. Finally, I will discuss prospects for directly detecting this planet in the near future and what it might tell us about the formation of the solar system.

Seminars are also held at JAC, CFHT, and IfA.

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