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Brains On! Science podcast for kids
Why isn’t Pluto a planet anymore?
Oct 17, 2023
Learn about why Pluto is no longer considered a planet, including its size and location within the Kuiper Belt. Discover the unique features of Pluto and hear from the planet itself in a Q&A session. Explore the history of Pluto as a planet and the events that led to its reclassification as a dwarf planet. Also, find out about a crocheted vest shop and a podcast that teaches kids about money.
27:39
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Quick takeaways
- Pluto was reclassified as a dwarf planet in 2006 due to its size and orbit.
- The New Horizons spacecraft provided valuable information about Pluto's surface, atmosphere, and the early formation of planets in the Kuiper Belt.
Deep dives
Pluto's Discovery and Classification
Pluto was discovered in 1930 and was considered the ninth planet in our solar system. It was named after the Greek god of the underworld. However, scientists later realized that Pluto didn't meet all the criteria to be classified as a planet. It was smaller than initially predicted and its orbit had other Pluto-sized objects nearby. Therefore, in 2006, Pluto was reclassified as a dwarf planet. Despite this reclassification, Pluto remains an interesting object of study, providing insights into the formation of our solar system.
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Discover
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Listen to the best highlights from the podcasts you love and dive into the full episode