The American Astronomical Society, find out more The Institute of Physics, find out more EVIDENCE FOR A DISTANT GIANT PLANET IN THE SOLAR SYSTEM User CybergothiChe, in the The holographic nature of reality - It's Obvious If You Think About It subreddit, 08 Oct 2020
In 2016 a scientific article was published saying that it's pretty likely there is a planet beyond Neptune around ten times the size of the Earth on a 15,000 - 20,000 year orbit. The proof is mostly in the physical effects it's having on the Kuiper Belt and outer planets. User CybergothiChe, in the The holographic nature of reality - It's Obvious If You Think About It subreddit, 22 Dec 2018
In 2016 a scientific article was published saying that it's pretty likely there is a planet beyond Neptune around ten times the size of the Earth on a 15,000 - 20,000 year orbit. The proof is mostly in the physical effects it's having on the Kuiper Belt and outer planets. User CybergothiChe, in the conspiracy subreddit, 20 Nov 2018
13 page downloadable report supporting Evidence for a Distant Giant Planet in the Solar System User Voyage_of_Roadkill, in the /r/space: news, articles and discussion subreddit, 07 Apr 2016
iEVIDENCE FOR A DISTANT GIANT PLANET IN THE SOLAR SYSTEM User cfedez, in the información sobre geología subreddit, 21 Jan 2016
So we did discover "Big Ben" from Blindsight after all. Newly discovered Trans-Neptunian gas giant mirrors the planet from Peter's novel User enablegravity, in the A community for fans of fiction by Peter Watts. subreddit, 21 Jan 2016
EVIDENCE FOR A DISTANT GIANT PLANET IN THE SOLAR SYSTEM User starspawn0, in the This Is the Way It Will Be... subreddit, 21 Jan 2016
EVIDENCE FOR A DISTANT GIANT PLANET IN THE SOLAR SYSTEM User Myfavoritegadgets, in the Astronomy subreddit, 21 Jan 2016
[Off-Site] EVIDENCE FOR A DISTANT GIANT PLANET IN THE SOLAR SYSTEM User photonsnphonons, in the Useless Yet Interesting Calculations subreddit, 21 Jan 2016