Helium is formed by nuclear fusion reactions between hydrogen atoms under extreme temperature and pressures. These reactions still take place today in the centers of stars; in fact, the enormous energy released by such reactions is what drives our own sun.
In the early universe there was only Hydrogen and Helium (and a smidgen of Lithium).
Around 24% of the ordinary matter in the universe is thought to be helium. The Big Bang theory supports this by explaining how helium was formed in the early universe through nuclear fusion reactions when temperatures were high enough to convert hydrogen into helium.
One compound containing helium is helium hydride (HeH+). It is the first compound to be formed in the universe and is found in planetary atmospheres. It is important in astrochemistry for understanding the chemistry of the early universe.
The proportions at which elements occur in the observable universe closely match predictions of the Big Bang theory. According to this model, only the simplest elements would have condensed from the primordial quark-gluon plasma: hydrogen and helium. Heaver elements would have formed inside the first stars and supernovae. Most of the visible matter in the universe would therefore be hydrogen and helium, with heavier elements in lesser numbers, proportional to their atomic weight.
Hydrogen and helium were mainly produced during the Big Bang, the event that created the universe. Roughly 75% of the normal matter in the universe is hydrogen and about 25% is helium. These elements have since played a fundamental role in the formation and evolution of all other elements in the universe through processes like nuclear fusion in stars.
In the early universe there was only Hydrogen and Helium (and a smidgen of Lithium).
Around 24% of the ordinary matter in the universe is thought to be helium. The Big Bang theory supports this by explaining how helium was formed in the early universe through nuclear fusion reactions when temperatures were high enough to convert hydrogen into helium.
From stars.
One compound containing helium is helium hydride (HeH+). It is the first compound to be formed in the universe and is found in planetary atmospheres. It is important in astrochemistry for understanding the chemistry of the early universe.
The proportions at which elements occur in the observable universe closely match predictions of the Big Bang theory. According to this model, only the simplest elements would have condensed from the primordial quark-gluon plasma: hydrogen and helium. Heaver elements would have formed inside the first stars and supernovae. Most of the visible matter in the universe would therefore be hydrogen and helium, with heavier elements in lesser numbers, proportional to their atomic weight.
Mainly hydrogen and helium - which were also the main elements in the early Universe.
Hydrogen and helium were mainly produced during the Big Bang, the event that created the universe. Roughly 75% of the normal matter in the universe is hydrogen and about 25% is helium. These elements have since played a fundamental role in the formation and evolution of all other elements in the universe through processes like nuclear fusion in stars.
In the early Universe, there were no heavy elements around - all the matter of the Universe was in the form of hydrogen, helium, and small amounts of lithium; until the first stars formed, created these heavier elements, and put them out into space when they exploded as supernovae.
Helium is formed in the universe through nuclear fusion processes that occur in stars. During the fusion of hydrogen atoms in the core of a star, helium is produced as a byproduct. This process releases a large amount of energy and is responsible for the creation of helium in the universe.
Different theory prevail but the leading one states that at the initial formation of the Universe it was just 100% hydrogen. A few minutes later, the universe had cooled to about one billion kelvin and nuclear fusion occurred, this lasted only a few minutes but was rapid enough to produce the ~25% Helium we still see today. There was also a little bit of deuterium and lithium but generally, a few minutes after the big bang the Universe was 75% hydrogen and 25% helium.
The USA produces about 80% of the world's Helium . It is the second most abundant element in the Universe. When the singularity that preceded the universe erupted in what we call 'The Big Bang', hydrogen particles began to form, and from these helium resulted in the nuclear furnaces of the early stars. Most of Earth's Helium is the result of radioactive decay, originating in the long run from the core of the Earth. There is a good article on Helium in wikipedia.
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