> Could it be a small black hole? It could, the relevant part of the whole thing is the object's mass (and therefore its gravitational influence) and its orbit

> Could it be a small black hole? It could, the relevant part of the whole thing is the object's mass (and therefore its gravitational influence) and its orbit. Lex Fridman did a podcast interview a few months ago with Konstantin Batygin [0] about the topic of Planet Nine and he poses this exact question of whether or not it could be a black hole [1]. More specifically, he asks if it could be a primordial black hole which would make it a double discovery since primordial black holes are still only theoretical. [0] https://www.youtube.com/watch?v=tm7poMupE8k https://www.youtube.com/watch?v=tm7poMupE8k [1] https://www.youtube.com/watch?v=tm7poMupE8k&t=4757s https://www.youtube.com/watch?v=tm7poMupE8k&t=4757s