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Pluto should be our ninth planet. A planetary scientist explains why

Astronomers believe they’re closing in on the so-called Planet Nine, but planetary scientist Paul Byrne argues our official definition of what is and isn’t a planet is in need of a long-overdue shake up.

2023-06-11T23:40:00-0700 BBC Science Focus Magazine Paul Byrne 2,000 words

Rated 2023-06-13T10:52:47-0700 - sethherr