How will life on earth end?

Answer 1

No one knows for sure but we know about certain theories theories. Astronomers believe that the sun will hydrogen and will become a red giant . It will produce a lot of heat , the earths oceans will evaporate and lands will be scorched . This is how life on earth will end .

Answer 2

there are lots of possibilities here are a few you a large asteroid/comet/meteor strikes earth or if a star that is close enough dies explodes and destroys earth with its shockwaves or/and it will produce gama rays which if they are close enough enough 100 or 1000 light years away could blast us destroy the ozone layer and go through the centre of earth.plus a thing called the big rip this is the universe is increasing in size at an alarming rate and so are the solar systems all the planets could just rip apart. plus the gasses in the sun could burn out all of it it produces a lot of c02 the sun will increase in size eating the first planet becoming so close earth will roast to death itll have cracks everywhere and then the sun will xplode and collapse and turn into a white dwarf don't worry that's years and years and years and years away.