As more water vapor, a potent greenhouse gas, enters the atmosphere, the planet will experience a “moist runaway greenhouse effect,” accelerating global warming beyond the point where life can survive.In Earth’s final stages, it will resemble Venus, with scorching temperatures and an atmosphere stripped of moisture. The Sun, by then a red giant, may engulf the planet. This prediction highlights the finite nature of Earth’s habitability, underscoring the need for space exploration and the search for new homes for humanity.
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