What is Kardashev Scale? There are approximately 40 billion planets that could sustain life in the Milky Way, these planets are called Exoplanets(Planets outside our Solar system). there are some ~2 trillion galaxies like the Milky Way within the observable universe. Considering these billions of habitable exoplanets, it seems impossible that there wouldn’t be other… Read More Kardashev Scale: Evolution of Human Civilization