GENERAL KNOWLEDGE

GK

BIG BANG THEORY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The cosmic background radiation is:
A
the remaining energy from the big bang.
B
incredibly hot.
C
visible to the human eye.
D
only located in certain places in the universe.
Explanation: 

Detailed explanation-1: -The cosmic microwave background radiation is the faint remnant glow of the big bang. This false color image, covering about 2.5 percent of the sky, shows fluctuations in the ionized gas that later condensed to make superclusters of galaxies.

Detailed explanation-2: -The cosmic microwave background radiation and the cosmological redshift-distance relation are together regarded as the best available evidence for the Big Bang event.

Detailed explanation-3: -In 1965 it was discovered that low energy microwave radiation (at 7.35 cm uncorrected) reaches us from all directions in space (about 400 photons cm−3). This is referred to as the cosmic background radiation whose wavelength corresponds to radiation from a black body of temperature 2.7 K (about 0.0003 eV).

Detailed explanation-4: -The cosmic microwave background (or CMB) fills the entire Universe and is leftover radiation from the Big Bang.

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