Comments on: Alien ‘Dyson spheres’ could be harvesting the power of black holes https://lifeboat.com/blog/2021/09/alien-dyson-spheres-could-be-harvesting-the-power-of-black-holes Safeguarding Humanity Thu, 02 Sep 2021 07:18:44 +0000 hourly 1 https://wordpress.org/?v=6.6.2