We're All Going To Die.

And by we, I mean humanity. Or all living things really, but I'm using humanity as an example because y'know, its more relevant than anything else, given that we're human.

The sun is a star, and like a lot of things it has a sort of life cycle, except stars aren't living things so it's not exactly a "life" cycle, but it's just terminology I'm going with. So all stars start out life as just clouds of gas and dust in space. Then, because of gravity, all of the gas and stuff comes spiraling in and the gravitational energy turns into heat energy, and the temperature rises so it's really really really hot, and eventually some nuclear fusion happens and it forms helium nuclei with give out immense amounts of light and heat and stuff. This is where it becomes a star and it's oh so magical. Straight away it enters a stable period where it's all nice and neat and it isn't killing anything because all of the forces are balanced, and it's called a main sequence star. It's also at this stage where our sun is now, except it's about halfway through this period. But on the bright side, this period can last millions of years. On the not so bright side, at some point it's gonna stop being a main sequence star and to cut a long story short, the Earth is gonna be engulfed by the sun. It's kinda like the sun is initiating karma, because it's like it's saying to the Earth, "Hey! I'm the reason you have life living on you, but that life is slowly killing you and that's not fair so I'm going to kill you! Eventually..."

So yeah, when the sun finishes it's stable period and becomes a red giant, it's gonna swell to a really really big size and get really really cold, and there is absolutely no chance of the Earth surviving that. Again, we're back to the bright side, and I'm just suggesting that humanity is maybe, probably, definitely not going to be here by then.

With the rate we're going at, destroying rainforests and using all of the non-renuable fuel sources and burning them and ripping holes in the ozone layer (French translation: ozone nappy), if we don't kill off all of the life on our planet in the next few hundred years and we don't kill off the whole world with war against martians, unless we can evolve into something which can live without oxygen, food and clean drinking water, we're all just going to die out. This could be from what I mentioned before, or maybe the radiation we cause in our day to day lives will just become too much for us and the whole world will become infertile and cause self extinction. Basically, by my rough estimation, in less than a thousand years, there's a high possibility that there just won't be anything left living.

So, when the sun finally reaches the end of it's stable life, we'll be long gone. Well, probably. Due to the rate that revolutions have been happening in the past two thousand years at least, there's always the possibility that if we can last a few thousand years, we'll have advanced enough to build a spaceship to take the entire content of the world away from the earth to live in a different solar system. It could happen, but personally I think that if we're going to survive the next few hundred years, we're going to have to evolve, and the most likely way of whatever we evolve into surviving is if we evolve into something which transcends matter, and personally I don't see that happening. So really, in a few hundred years, we're screwed. Then in a few million years, the Earth will be screwed. The sun will be okay though, it'll just be little different, and a little lonely.