GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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During which of the following epochs does hadrons (ie:Protons, Neutrons) not exist yet?
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Photon Epoch
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Lepton Epoch
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Planck Epoch
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Hadron Epoch
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Explanation:
Detailed explanation-1: -The Planck epoch is the earliest period of time in the history of the universe, before the time passed was equal to the Planck time (tₚ); that is from zero to approximately 10⁻⁴³ seconds.
Detailed explanation-2: -Protons and neutrons began forming shortly after, from about 10-6 to 1 second after the Big Bang. Within about 3 minutes after the Big Bang, conditions cooled enough for these protons and neutrons to form hydrogen nuclei. This is called the era of nucleosynthesis.
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