What is the cosmic microwave background radiation?

Answer 1

As per astronomers universe began with a huge expansion called big bang.

The temperature and pressure was very very high from the BIG bang...AS time passed the universe began to expand and cooled .as per estimates the big bang started about 13.82 billion years ago.The universe still have the heat from the big bang,It is about 2.7 degree K every where in the universe..In 1947 George Gamow predicted this to be about 4.5.degre K. from wikipeda"On May 20, 1964, American radio astronomers Robert Wilson and Arno Penzias discovered the cosmic microwave background radiation (CMB), the ancient light that began saturating the universe 380,000 years after its creation. And they did so pretty much by accident.M"

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Answer 2

One of the most important pieces of evidence for the Big Bang theory is the cosmic microwave background radiation, or CMB radiation, which is the thermal radiation left over from the Big Bang. It is the oldest electromagnetic radiation in the universe and fills the entire universe uniformly. Its temperature is about 2.7 Kelvin.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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