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    Short WavePluto Isn't A Planet — But It Gives Us Clues For How The Solar System Formed
    14 minEpisode 1079

    Pluto Isn't A Planet — But It Gives Us Clues For How The Solar System Formed

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    Pluto hasn't been a planet for almost 20 years. In the early 2000s, scientists discovered several objects of a similar size to Pluto. So, during the summer of 2006, members of the International Astronomical Union convened in Prague to reconsider what counts as a planet in our solar system. IAU members decided that there were three criteria to be a planet — and Pluto didn't meet all of them.

    But planetary scientist Wladymir Lyra says that even though it was downgraded to a dwarf planet, Pluto still has much to teach us about planet formation. This episode, he also lays out his case for Pluto — and many other objects in the solar system — to be considered a planet.

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    © NPRLength 14 min18 June 2024Episode 1079ScienceFactsEducationalUSAEpisodic

    Introducing Short Wave

    Introducing Short Wave

    This is an episodic podcast, so you can listen to it in any order, but episode one is a great place to start.

    Listen to episode one here
    11+ScienceFactsEducationalUSAEpisodic18 June 2024© NPR

    Pluto hasn't been a planet for almost 20 years. In the early 2000s, scientists discovered several objects of a similar size to Pluto. So, during the summer of 2006, members of the International Astronomical Union convened in Prague to reconsider what counts as a planet in our solar system. IAU members decided that there were three criteria to be a planet — and Pluto didn't meet all of them.

    But planetary scientist Wladymir Lyra says that even though it was downgraded to a dwarf planet, Pluto still has much to teach us about planet formation. This episode, he also lays out his case for Pluto — and many other objects in the solar system — to be considered a planet.

    This episode is part of Short Wave's space camp series about all the weird, wonderful things happening in the universe. Check out the full series.

    Questions about the state of our universe or smaller happenings here on planet Earth? Email us at shortwave@npr.org — we'd love to consider it for a future episode!

    See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.

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    © NPR |Original Episode URL. The content, artwork and advertising within this podcast is not owned or affiliated with Sound Carrot and remain the property of their respective owners.


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