GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the big bang.
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humans came along.
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stars began doing fusion.
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the redshift was discovered.
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Detailed explanation-1: -During the formation of the universe some 14 billion years ago in the so-called ‘Big Bang’, only the lightest elements were formed – hydrogen and helium along with trace amounts of lithium and beryllium.
Detailed explanation-2: -The early universe (left) was too hot for electrons to remain bound to atoms. The first elements-hydrogen and helium-couldn’t form until the universe had cooled enough to allow their nuclei to capture electrons (right), about 380, 000 years after the Big Bang.
Detailed explanation-3: -The low-mass elements, hydrogen and helium, were produced in the hot, dense conditions of the birth of the universe itself. The birth, life, and death of a star is described in terms of nuclear reactions. The chemical elements that make up the matter we observe throughout the universe were created in these reactions.
Detailed explanation-4: -Hydrogen and helium atoms emerged a measly 379, 000 years after the Big Bang. As the hot, dense plasma of protons, electrons and photons that was the universe began to cool and expand, electrons and protons gathered to form atoms.