Nucleosynthesis is the process that creates new atomic nuclei from pre-existing
nucleons, primarily protons and neutrons. The first nuclei were formed about
three minutes after the Big Bang, through...
Atoms that are heavier than hydrogen were made by nuclear fusion after the big
bang. Initially, only the lightest element, hydrogen, was present.
Sep 10, 2004 ... Hydrogen is the simplest possible atom by definition, one proton and one ... the
universe was also expanding, and the chances of collision were getting smaller.
... Elements heavier than iron are made in such explosions.
I think I understand your dilemma: you are wondering why, if high temperatures
and high .... You assume that heavier atoms at higher temperatures => lighter
particles at colder ted ... How were the heavy elements from iron to uranium
Jun 8, 2010 ... All of the atoms on the Earth except hydrogen and most of the helium are ... made
of carbon atoms, hydrogen atoms, and oxygen atoms (C6H12O6). ... The atoms
heavier than helium up to the iron and nickel atoms were made ...
Jul 1, 2015 ... You see, the Universe starts off with hydrogen and helium, all stars ... In fact, you
can't make the first of the heavier-than-helium elements in ...
Jan 13, 2012 ... Forging heavier elements from lighter ones used to be the sole ... the carbon in
our apple pies were made in the interiors of collapsing stars. ... We have
redefined matter and are perhaps the only planet that has ever seen elements
heavier than plutonium. ... First, stars fuse hydrogen atoms into helium.
Nuclear fusion involves two atomic nuclei joining to make a large nucleus.
Energy is released ... A hyrdogen-1 nucleus is made of 1 proton. This can
combine ... Heavier elements than hydrogen and helium (up to iron) are formed.
You know that everything in the universe is made up of atoms and that those
atoms ... Look at the timeline below and notice when the first elements were
formed from the ... when hydrogen fuses to form helium and heavier elements
such as carbon. ... that even heavier elements than iron are able to form by
Jul 5, 2013 ... Practically all of these heavy elements were formed in generations of stars: ... the
Universe was made out of about 92% hydrogen atoms and 8% helium atoms ...
and why didn't more of the Universe become helium than it did?