The Cosmic Microwave Background Radiation was predicted by proponents of Big Bang Cosmology (BBC) about 18 years before it was found. Its existence, isotropy, and spectrum is easy to explain with BBC; pretty much impossible to explain using alternatives.
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The background noise of the Big Bang, also known as the Cosmic Microwave Background (CMB), is radiation left over from the early universe. It is a faint glow of microwaves that fills the entire universe and offers important clues about the origins and evolution of the cosmos.
I think you're probably talking about the cosmic microwave background radiation. It's microwave radiation that's coming from ... well, everywhere. It doesn't matter what direction you point the antenna in, you see microwave radiation. When you subtract out visible (either in actual visible light, or infrared, or ultraviolet, or X-ray, or whatever) stars and galaxies, you're left with a microwave background corresponding to a temperature of about 3 K. The reason this supports the Big Bang theory is that it's consistent with the idea that the Universe started at a very high temperature a long time ago and has been expanding and cooling since: the microwave background is what's left of that heat.
In the context of the Big Bang theory, the "cosmic microwave background radiation" was once thought to be static, leading to the discovery of the Big Bang. Static noise interference inadvertently discovered by Arno Penzias and Robert Wilson in 1965 turned out to be the afterglow of the Big Bang, providing strong evidence for the theory.
It helped prove the big bang theory.
I am not entirely sure about the wavelength; however, the features of the background radiation agree very closely to what would be expected from the Big Bang theory.
The 1964 discovery of cosmic microwave background radiation supported the Big Bang theory of the universe. This radiation is considered a remnant of the early stages of the universe when it was hot and dense, aligning with the predictions of the Big Bang model.
Hello i am minakshi answer is that the big bang theory is an example of old scientific theory as big bang theory explains that there was an explosion but the isotropy and the homogenity of the universe is not explained by big bang theory to explain his we connect inflatation theory with big bang theory to explain it so the big bang theory is also an example of old scientific theory.