I watched an interesting Documentary about life in the future and they were talking about how humans would survive in the distant future trying to avoid entropy, or the heat death of the Universe. They ended up with space stations in very close orbit around a white dwarf star desperate for any heat from the long-lived dwarf stars. But even then they would burn out and you would be left without power. The people in the documentary eventually traveled through a artificial wormhole to another universe and escaped the super cold universe of blackness and freezing void.
The link above gives a useful insight into the entropy debate. Sure, the year 10 trillion is a long way away, but I wish I could be there to see it. Like in the television show on 11, Stargate Universe where they are 7.000.000.000 light years from Earth and stuck on a ship that is on a set course through space and they can not really control it. The episode where they fell into the yellow dwarf star was very cool, with the ship sucking up superheated plasma from the star to replenish it’s supplies of energy. I never expected that old hulk to actually survive the 6000 degree Celsius temperatures and immense gravity on the surface of the star, but there you go.
And the ship was harvesting deuterium from the star’s photosphere, which is also found in seawater and could provide Earth with an abundant future energy source, freeing us from coal derived power which is polluting the planet and necessitating giant mines to extract the coal. We should be using more alternative energy sources like deuterium and thorium nuclear reactors instead of still using coal, it is 2011 not 1911.