Planet 9(X): The History, Location & Orbit [2021 Update CalTech]
See also: – Planet 9 may be closer and easier to find than thought—if it exists (1 Sep 2021) by NADIA DRAKE, https://www.nationalgeographic.com/ A new study’s “treasure map” suggests that a planet several times more massive than Earth could be hiding in our solar system, camouflaged by the bright strip of stars that make up …