alt Hacker News> Exoplanets also aren't planets.
That is flatly wrong.
https://en.wikipedia.org/wiki/Exoplanet
"An exoplanet or extrasolar planet is a planet outside the Solar System."
> Exoplanets also aren't planets.
That is flatly wrong.
https://en.wikipedia.org/wiki/Exoplanet
"An exoplanet or extrasolar planet is a planet outside the Solar System."
The GP post's point was that, logical as this would be, the IAU definition explicitly states that planets are "in the Solar System". So no, exoplanets are exoplanets, not planets. And Pluto isn't an example of either.