30 Mar '15 22:56>
We know the earth is doomed because the sun will eventually engulf the world, and our galaxy will collide with Andromeda, making even interstellar travel ultimately useless (unless we find resources on another planet that could allow help us leave the galaxy). Although, I have read that because of the vast in the galaxies, there's a possibility Andromeda may simply pass through.
But I'm getting ahead of myself. My question is about how much longer life on earth will last. Obviously, most life will have been exterminated long before the sun swells up to a red giant and engulfs the earth. The expansion of the sun will happen over time, and life on earth will gradually become more unbearable.
Life on land will vanish first, but what about ocean life? How long undersea life continue?
But I'm getting ahead of myself. My question is about how much longer life on earth will last. Obviously, most life will have been exterminated long before the sun swells up to a red giant and engulfs the earth. The expansion of the sun will happen over time, and life on earth will gradually become more unbearable.
Life on land will vanish first, but what about ocean life? How long undersea life continue?