3 ms·

The theory which most fascinates me is that it's not a planet at all, but a primordial black hole with a diameter of ~5cm.

• atoav 6y ago
  I love the fact that the paper which introduced that theory had a 1:1 illustration of that black hole in it.
  • JNRowe 6y ago
    "Exact scale (1:1) illustration of a 5M⊕ PBH."¹ ¹ https://arxiv.org/abs/1909.11090 https://arxiv.org/abs/1909.11090