In a way, yes. The controversy is about its name. The hypothetical planet 9 has not been directly observed. Instead, scientists have predicted its existence based on the strange, unexplained orbits of a handful of distant objects. Check this out why some scientists angry over the controversy: https://www.newsweek.com/scientists-are-angry-about-planet-9-and-its-because-pluto-1053682
In a way, yes. The controversy is about its name. The hypothetical planet 9 has not been directly observed. Instead, scientists have predicted its existence based on the strange, unexplained orbits of a handful of distant objects. Check this out why some scientists angry over the controversy: https://www.newsweek.com/scientists-are-angry-about-planet-9-and-its-because-pluto-1053682