Science and Mathematics Lectures (Video)
Tuesday, 20 September 2011
The Search for Planet X - Professor Ian Morison
The lecture will describe the nearly 200-year-long detective story of the search for planets in the outer reaches of the Solar System. It led first to the discovery of Neptune and Pluto and, recently, to Pluto's downgrading to a 'Dwarf Planet'. We already know of a second dwarf planet beyond Pluto; what others might there be?
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