Chris L Peterson:

The Sun will become a red giant, not a dwarf. And in so doing, it will
extend to somewhere near Earth's orbit, meaning that it will engulf
Mercury and Venus, and possibly Earth. They could survive that,
however, since the outer region of a red dwarf is so tenuous the
planets could continue to orbit inside it....
...
Since there will be no life on Earth when the galaxies collide,
there will be nothing to be harmed by any local supernovas....

Some people think that it is possible that microscopic life--bacteria,
in particular--living deep underground could survive the Sun's
red-giant phase. With the atmosphere and all of the surface water
boiled off, however, the chances of a new evolutionary cycle leading to
the repopulation of the Earth by large animals or plants seems very
unlikely.

--
I agree with almost everything that you have said and almost everything that
you will say in your entire life.

usenet *at* davidillig dawt cawm