Scientists claim that 98% of the universe was made after the 1st 3 minutes itself. It is also said that during the big bang, hydrogen was emitted in huge amounts, and due to its fusion, helium was also formed. However, can you tell me, how the heavier elements formed? what provoked such high temperature for their fusion?
2007-07-23 18:14:52 · 4 answers · asked by Kalpak I 2 in Science & Mathematics ➔ Astronomy & Space
The formation of other elements takes place in the hearts of stars. All elements up to Iron can be created by fusion reactions in heavy enough stars. As they evolved they expelled various layers as planetary nebulae etc.
Beyond Iron the necessary energy is only available in the cores of super nova at the time of the core collapse which leads to the explosion,
2007-07-23 18:31:15 · answer #1 · answered by Anonymous · 0⤊ 0⤋
You answered your own question - fusion caused it. Fusion occurs in the middle of stars, especially heavy ones. If as star is heavy enough, it will explode as a supernova.
So, hydrogen clouds condensed and gravity pulled them together into stars, they got heavy enough to ignite and start fusion reactions, creating the heavy elements, and then exploded as supernovas, releasing their elements into clouds called nebulae, which then form into galaxies, other stars, and planets like Earth.
2007-07-24 01:27:08 · answer #2 · answered by Electro-Fogey 6 · 2⤊ 0⤋
you have answered the question!
the fusion make it....
2007-07-24 01:39:21 · answer #3 · answered by hanon hosho 2 · 0⤊ 0⤋
-.-.....ever heard of a super or hypernova? the heat in one of hose babys, would turn rock to air in 1000th of a second.
2007-07-24 02:23:25 · answer #4 · answered by Eddyking4 2 · 0⤊ 1⤋