Planetary Discoveries
Neil discusses the evolving understanding of Pluto's size, Neptune's orbit discrepancies, and Mercury's mysterious precession. The failures and triumphs in planetary observations shed light on the complexities of scientific discovery.In this clip
From this podcast

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The Long Arc to Scientific Understanding — Live from the Museum of Natural History
Related Questions
Why is Pluto not considered a planet?
Why is Pluto not considered a planet according to the episode Neil deGrasse Tyson Debates a Pluto Expert and the clip Pluto's Planetary Status?
Why is Pluto not considered a planet according to the episode Planet Earth From A Higher Perspective W/ Alan Stern #329 and the clip Exploring the Kuiper Belt, as well as the episode Neil deGrasse Tyson Debates a Pluto Expert and the clip Pluto's Planetary Status?