In about 5 billion years, our Sun will turn into a white dwarf, and life on Earth will not survive the death of the Sun, but in 600 000 000 years, conditions on Earth will not allow supporting life as we know it, mainly due to increased solar radiation, as a result of which water on Earth will evaporate and our atmosphere will be blown out into space by the solar wind.
I'm a little bit worried about all of human civilization.
