Eventually our Sun will use up all of its hydrogen, and start expanding. The Earth will no longer be habitable, and humans will have needed to establish independent places elsewhere. The sooner we begin, the better.
Eventually our Sun will use up all of its hydrogen, and start expanding. The Earth will no longer be habitable, and humans will have needed to establish independent places elsewhere. The sooner we begin, the better.
Time is a wasting, only 800 million years and counting!