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Science Trek
Planets: What Exactly is a Planet?
Directed by
Al Hagenlock
S22 • E4
Oct 5, 2020
5m
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How we've defined what a planet is has changed over time. Is Pluto a planet? Is Ceres? Find out the difference between a planet and a dwarf planet and why scientists decided to change things up.
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Where to Watch Science Trek - S22 • E4
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Cast of Planets: What Exactly is a Planet?
Joan Cartan-Hansen
Self - Host / Writer / Producer
Al Hagenlock
Director / Editor
Bruce Reichert
Executive Producer
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