Pluto Isn’t a Planet, 3 June | Event in London | AllEvents

Pluto Isn’t a Planet

Gresham College

Highlights

Wed, 03 Jun, 2026 at 07:00 pm

1 hour

VENUE CHANGE - Conway Hall

Free Tickets Available

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Date & Location

Wed, 03 Jun, 2026 at 07:00 pm to 08:00 pm (GMT+01:00)

VENUE CHANGE - Conway Hall

25 Red Lion Square, London, United Kingdom

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About the event

Pluto Isn’t a Planet
In 2006, a new definition of the term planet demoted Pluto to a dwarf planet. But what does that mean for the way we think about space?

About this Event

In 2006, the International Astronomical Union adopted a definition of a planet that demoted Pluto to just one of what is likely hundreds of dwarf planets in our Solar System. Exploring the remote Kuiper Belt, this lecture challenges us to think about what kinds of scientific questions are worth our attention, what it means to name something – and why Pluto is worth caring about anyway. 

A lecture by Professor Chris Lintott.

This event is also available to watch live online. To register, visit: https://www.gresham.ac.uk/whats-on/pluto-planet

Gresham College has offered free public lectures for over 400 years, thanks to the generosity of our supporters. We believe that everyone should have the opportunity to learn from some of the greatest minds. To support Gresham College's mission, please consider making a donation: Donate Today | Gresham College


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Ticket Info

Tickets for Pluto Isn’t a Planet can be booked here.

Ticket type Ticket price
General Admission Free
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VENUE CHANGE - Conway Hall, 25 Red Lion Square, London, United Kingdom
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Host Details

Gresham College

Gresham College

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Pluto Isn’t a Planet, 3 June | Event in London | AllEvents
Pluto Isn’t a Planet
Wed, 03 Jun, 2026 at 07:00 pm
Free