Here’s an article on the possible discovery of Planet Nine on Space.com. I first saw this one an ABC news site, but I trust Space.com more for astronomy news than ABC.
I asked the SETI/Unistellar folks if confirming/denying this would be something the Unistellar Citizen Scientists could contribute to, but apparently we’d need Infared capability on my eVscope 2 and Odyssey to be able to detect it. Hopefully they’re working on that in the next model. 