The Kardashev and Barrow Scales of Alien Civilizations
KARDASHEV SCALE 24 139139 8462852 Alien Aliens asmr asteroid astronomy Astrophysics barrow comet cosmology cosmos drake Earth enceladus equation europa exoplanet extraterrestrial fermi fermi's ftl galaxy godier hubble jmg john jupiter jwst Kardashev learning mars megastructure mercury michael moon mystery nasa neptune paradox planet pluto pryzybylski's radio relaxation saturn science scientific SETI sleep Space Star sun tabby's technosignature telescope titan uap ufo unexplained Universe unknown uranus venus webb
