TrentM2833 said:
Ok everyone, ever since i was 16 i have been studying this kind of stuff. Anyways I'm now 18 and a senior in high school and really want to get one of my theories out there. I am not giving my complete theory but i want you guys to give me straight answers on this. We all know we were basically made of stardust. Well everything even atoms are made of mostly hydrogen. Well someday hydrogen will run out and we'l have no more left. This is right isn't it? Hydrogen combines with helium which creates massive elements. So basically someday down the road when stars can no longer exist because of no more hydrogen then it would be impossible for any kind of human life to exist too right? Also is there a site (this is off topic) where i can post my own info and copyright my own theory so no one can steal it? I wanted to use the physics forums for this because you guys are the most intelligent people i ever heard on forums about this kind of stuff. This is just a hobby of mine but I'm trying to make stuff that gets out there someday and I'm hoping i only get more clever since I'm already making my theories up at only 18 years old. Anyways thanks for reading and tell me what you guy think about hydrogen running out someday.
You seem to be confusing a lot of things here, and I will try to break it down in ways I do not see addressed by previous replies to your post. The problem, I think, is perhaps better understood as a logical fallacy than a scientific one: When something is created, the loss or destruction of the creator does not mean the loss and destruction of the created.
Hydrogen is, by every model of the universe I am aware of, the most abundant element and the one that 'started it all.' It was the only element that existed prior to the first stars, and even with the 15 or so billion years of trillions of stars across the universe starting, fusing hydrogen into heavier elements, and the vast majority of those stars having fused all the hydrogen they could into heavier elements before dying in supernovae, novae or simply dying out for smaller stars, hydrogen remains vastly the most abundant element. Every element heavier than hydrogen only exists because it was forged in the nuclear furnaces of stars, combining hydrogen atoms to form helium and helium atoms to form every element.
Our Sun will die, taking the Earth with it when it swells out in its death throes to likely encompass the Earth (and even if it doesn't expand that for, would certainly swell to get close enough to the Earth to boil off not just the oceans and our atmosphere, but boil the rock and heavy elements away as well) long before the universe runs out of hydrogen to form new stars.
Even if this were not the case, though, if the last atom of hydrogen in the last star containing hydrogen were to fuse beyond hydrogen, leaving behind only the hydrogen external to stars (interstellar clouds, brown dwarfs and planetary-sized objects too small to sustain fusion), that would not have an effect on existing hydrogen (such as the hydrogen component of water that makes up some two-thirds of the mass of a human body).
All evolutionary ancestors of human beings -- homo sapiens -- are now extinct. Their lack of continued existence does not mean we cannot exist. By the same token, all the heavier-than-hydrogen elements such as oxygen and carbon that are components of human beings and all life on the planet were created in stars that died. It was, in fact, the death throes of those stars that the heaviest elements were created (especially iron and heavier). All life on the planet, in fact, could not exist if those stars had not died (and thus created the elements, in their deaths, that make up our planet and we biological entities on Earth).
Put more simply: You do not cease to exist when your parents die. They biologically created you, but you are an entity not biologically dependent on them after you were created. Similarly, the destruction or loss of what created us -- biological or nuclear-elemental -- does not directly correlate to ceasing our continued existence.
