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Mr. Black Boi replied with this 1 month ago, 1 minute later, 4 minutes after the original post[^][v]#1,435,868
However, it will still die. The sun’s luminosity increases by about 10% every billion years, which means that even though the sun won’t die for another 5 billion years, the Earth’s oceans will evaporate in 300 million to 1 billion years. Then when the sun becomes a red giant, it will expand past the orbit of the Earth, the Earth will end up inside the sun, then the sun will turn into a white dwarf and keep producing light for trillions of years while it cools off until eventually it becomes a black dwarf.
We only need 250 million when the next supercontinent forms. A tiny northern coast will be semi inhabitable but in the way Arctic stations or moon colonies would be. And it won’t sustain 8 billion people.