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Physics 9 Online
OpenStudy (anonymous):

red-shift and cosmic microwave background radiation are two phenomena observed by astronomers describe each phenomenon and explain how it relates to the big bang model

OpenStudy (gebooors):

Stars which contain mainly Hydrogen and little Helium, emit certain wavelengths. When stars are moving away with great speed, these wavelengths Are red-shifted, also wavelengths grow. It is like Doppler effect, But flow electromagnetic radiation.

OpenStudy (anonymous):

what about cosmic microwave background radiation @Gebooors

OpenStudy (gebooors):

So called 3 K radiation means that temperature of space is same in Every direction. So, space has inflated such a long time that it's Temperature has dropped near absolute zero.

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