Watch a debate over whether Pluto should get its planet status back

If you’re someone who is still upset about Pluto’s planetary demotion from more than a decade ago, then an upcoming debate about the definition of the word “planet” may be of interest to you.
One of Pluto’s biggest defenders, Alan Stern, will be debating Ron Ekers, who used to be the president of the International Astronomical Union — the global organization responsible for redefining the term “planet.” It was ultimately the IAU’s decision to designate Pluto and other small worlds like it as “dwarf planets,” a title distinct from the term “planet.” The change triggered a lot of angst and upheaval over the loss of Pluto’s planet status. Perhaps the biggest critic of the new definition has been Stern, the principal investigator on NASA’s…

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