What Do Alien Civilizations Look Like? The Kardashev Scale
You can find our beautiful education posters, useful notebooks and cozy sweaters in our shop now: https://kgs.link/shop-126 Sources & further reading: https://sites.google.com/view/sourceskardashevscale/ The observable universe is a big place that has been around for more than 13 billion years. Up to two trillion galaxies made up of something like 20,000 […]
