What led to the conceptualization of the Big Bang?

Answer 1

Cosmic Microwave Background (CMB) radiation.

The discovery of Cosmic Microwave Background (CMB) radiation.by 1978-Nobels Arno A. Penzias and Robert W. Wilson confirmed the explosive nature to the origin of our universe.

CMB is called the echo of the Big Bang (BB) event.

2006-Nobels John Mather and George Smoot analyzed NASA's satellite data and their findings supported the estimate of the age of our universe.

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Answer 2

Christopher Ales

The Big Bang theory was mainly conceived as a result of the observation that the universe is expanding, as indicated by the redshift of galaxies, and was reinforced by the finding of cosmic microwave background radiation.

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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.