Gresham College Lectures
Gresham College has been providing free public lectures since 1597, making us London's oldest higher education institution. This podcast offers our recorded lectures that are free to access from the Gresham College website, or our YouTube channel.
Gresham College Lectures
The Search for Planet X
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Gresham College
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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...