Scanning the skies for a new ninth planet
Update: 2025-08-28
Description
It's been almost 20 years since Pluto lost its status as the ninth planet in our solar system. Now astronomers think they have identified a candidate to take its place. Katherine Volk with the Tucson-based Planetary Science Institute discusses a rare object that is orbiting the sun in step with the eighth planet, Neptune. Katherine Volk spoke with Tim Swindle, professor emeritus in Planetary Science at the University of Arizona.
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