| Cyrus said: Let me correct these statements: 1) It is right that iron is the element with lowest mass/nuclei relation. This means fusion from iron to heavier nuclei does not release energy but consume it. So in fusion up to iron a star will release energy in form of light, while fusion from iron to heavier elements (mostly through neutron capture) takes away some of the energy inside a star. If that wouldn't be the case, stars would just continue to burn forever (or until all the mass has been transformed to energy). Also if you look at the elements available on earth most elements up to iron are quiet common, while heavier elements become rarer , which is a result of heavier elements needing more energy(/more captured neutrons) to be produced. The very heavy ones come from supernovae where theres plenty of energy available. The production of elements heavier than iron are no mystery at all. 2)The second law of thermodynamics is stated for closed systems! So it would only apply to a universe that is constant in volume. But our universe is expanding! But yes, it is still an open question why the distribution of mass in our universe is not more homogeneous.
I can totally agree to this: "It is just the best theory they have for the Orgin of our universe other than 'in the beginning God"." But please don't post false statements! Also, if a law of physics doesn't fit to an observation, that does not mean that the only answer left is god but that we need to find a new theory. Just think of Newtons laws of motion, which seemed accurate at the time. But where found to be wrong for relativistic particles (things close the speed of light). Instead of just giving up on the matter, it was renewed by the theory of relativity. |
Not exactly the case, Uranium is one of the highest elements found on the Periodic table, and yet it is just as commonly found around the planit as Tin or Zinc.
http://www.world-nuclear.org/info/Nuclear-Fuel-Cycle/Uranium-Resources/Supply-of-Uranium/
Which begs the question "how did so much Uranium get here through fusion?" It is simply hard to believe that fusion could have created each and every element on the periodic table, and then some how a star exploded all of thoese elements onto earth.
Also, if the earth really is billions of years old, wouldn't most of the uranium that came from the supernovas alreay have decayed into Thorium?
Uranium has a half life of about 4 Billion years, which means around the time when the first lifeform was first forming, there would have had to have been at least twice the amount of Uranium on earth as there is today. Thats a lot of Uranium, especially if you believe it all came from fusion!
