GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a large disc full of matter.
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a small, dense singularity.
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a large helium-filled glob.
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a rotating disc of rock and ash.
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Detailed explanation-1: -The Big Bang theory says that the universe came into being from a single, unimaginably hot and dense point (aka, a singularity) more than 13 billion years ago. It didn’t occur in an already existing space. Rather, it initiated the expansion-and cooling-of space itself.
Detailed explanation-2: -The Universe, at the earliest stages we can ascribe a “size” to it, could have been no smaller than roughly the size of a human being. This is a tremendous and recent improvement by about a factor of ten over a decade ago, when we would have said “no smaller than a soccer ball” instead.
Detailed explanation-3: -The initial singularity is a singularity predicted by some models of the Big Bang theory to have existed before the Big Bang and thought to have contained all the energy and spacetime of the Universe.
Detailed explanation-4: -The Big Bang was the moment 13.8 billion years ago when the universe began as a tiny, dense, fireball that exploded. Most astronomers use the Big Bang theory to explain how the universe began. But what caused this explosion in the first place is still a mystery.