Pluto. It’s a planet, then it’s not. This week we review Pluto’s history, from discovery to demotion by the International Astronomical Union. Learn the 3 characteristics that make up a planet, and why Pluto now fails to make the grade.
Astronomy Cast is a weekly podcast hosted by Fraser Cain from Universe Today, and Dr. Pamela Gay (of Slacker Astronomy fame). Each week we take a fact-based journey through the cosmos to explain the discoveries in astronomy, and understand how we know what we know.
Episode 1 – Pluto’s Planetary Identity Crisis
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Pluto’s Planetary Identity Crisis – Show notes and transcript
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Here’s some information on Pluto.