Comments on: Professor Proposes how a Black Hole in Orbit Around a Planet could be a Sign of an Advanced Civilization

Comments on: Professor Proposes how a Black Hole in Orbit Around a Planet could be a Sign of an Advanced Civilization https://lifeboat.com/blog/2024/09/professor-proposes-how-a-black-hole-in-orbit-around-a-planet-could-be-a-sign-of-an-advanced-civilization Safeguarding Humanity Wed, 18 Sep 2024 16:26:57 +0000 hourly 1 https://wordpress.org/?v=6.6.2