Out of every video Kurzgesagt has ever produced, my favorite is this one, which talks about a stellar engine that a type Ⅱ civilization could be using: https://

Out of every video Kurzgesagt has ever produced, my favorite is this one, which talks about a stellar engine that a type Ⅱ civilization could be using: https://www.youtube.com/watch?v=v3y8AIEX_dU https://www.youtube.com/watch?v=v3y8AIEX_dU