83: "Pluto" with Marcos Huerta cover art

83: "Pluto" with Marcos Huerta

83: "Pluto" with Marcos Huerta

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 When is a planet not a planet? When it gets downgraded after 75 years, apparently. But was Pluto’s fate a mistake by the IAU, or an example of science in action? Marcos Huerta joins Antony to talk Kuiper belt objects, the New Horizons probe, and arbitrary astronomical definitions.

Antony Johnston with Marcos Huerta.

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In the spirit of reconciliation, Audible acknowledges the Traditional Custodians of country throughout Australia and their connections to land, sea and community. We pay our respect to their elders past and present and extend that respect to all Aboriginal and Torres Strait Islander peoples today.