GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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All the matter and energy of the universe was compressed into a point.
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The earth was the biggest planet.
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Hydrogen formed after a few minutes.
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Protons, Neutrons, and Electrons formed after a few seconds.
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Detailed explanation-1: -As the universe cooled, conditions became just right to give rise to the building blocks of matter – the quarks and electrons of which we are all made. A few millionths of a second later, quarks aggregated to produce protons and neutrons. Within minutes, these protons and neutrons combined into nuclei.
Detailed explanation-2: -In less than a blink, our universe became incredibly larger (enlarging by a factor of at least 10^52). When this rapid expansion phase wound down, whatever caused inflation in the first place (we’re not sure what) decayed, flooding the universe with matter and radiation (we’re not sure how).
Detailed explanation-3: -About one ten-thousandth of a second after the Big Bang, protons and neutrons formed, and within a few minutes these particles stuck together to form atomic nuclei, mostly hydrogen and helium. Hundreds of thousands of years later, electrons stuck to the nuclei to make complete atoms.