Why Did Pluto Get the Boot? Pluto is no longer one of the nine planets of the solar system. Instead, astronomers say it should officially be considered a dwarf planet, while the solar system should encompass the eight classical planets. We'll look at the scientific thinking behind the decision.
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Why Did Pluto Get the Boot?

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Why Did Pluto Get the Boot?

Why Did Pluto Get the Boot?

Why Did Pluto Get the Boot?

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  • <iframe src="https://www.npr.org/player/embed/5709579/5709580" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Pluto is no longer one of the nine planets of the solar system. Instead, astronomers say it should officially be considered a dwarf planet, while the solar system should encompass the eight classical planets. What's the scientific thinking behind the decision?

Guest:

David Kestenbaum, science correspondent, National Public Radio