(February 13, 2016 at 8:32 am)Excited Penguin Wrote: This is the first time I'm hearing this. So in 5 billion years the universe won't be able to sustain life anymore?
Yea where did he get 5 billion? I can see that lifespan for a planet or star, but considering the universe is 14 billion years old seems 5 billion would be lowball estimate for the end of the universe.
Not that simple, the separation between galaxies wont mean heat death, it will just simply mean whatever life that might exist unless advanced would end up perceiving there island as being all there is because the distance would be great. Heat death is when there is no more energy in the universe to use. According to this article, expansion will lead to even the ripping apart of galaxies. But expansion to the point of not being able to see other galaxies will happen first.
But admittedly that is my take on it, here is the scientific article.
https://en.wikipedia.org/wiki/Heat_death...e_universe