GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Light
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Heat
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Waves
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Stars
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Detailed explanation-1: -The cosmic microwave background represents the heat radiation left over from the Big Bang. It is the residual heat of creation i.e., the afterglow of the big bang, streaming through space these last 13.8 billion years like the heat radiation from a sun-warmed rock, reradiated at night.
Detailed explanation-2: -The Cosmic Microwave Background (CMB) is the cooled remnant of the first light that could ever travel freely throughout the Universe. This ‘fossil’ radiation, the furthest that any telescope can see, was released soon after the ‘Big Bang’.
Detailed explanation-3: -According to standard cosmology, the CMB gives a snapshot of the hot early universe at the point in time when the temperature dropped enough to allow electrons and protons to form hydrogen atoms. This event made the universe nearly transparent to radiation because light was no longer being scattered off free electrons.
Detailed explanation-4: -The Cosmic Microwave Background radiation, or CMB for short, is a faint glow of light that fills the universe, falling on Earth from every direction with nearly uniform intensity.