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What Do Alien Civilizations Look Like? The Kardashev Scale

What Do Alien Civilizations Look Like? The Kardashev Scale

Amazing Stuff

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 billion billion stars surround our home galaxy.

Credit Kurzgesagt – In a Nutshell

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