GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Really small-like a tennis ball
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A hot, dense, single point called the singularity
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A hot state as large as the sun
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A cold state as large as the moon
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Detailed explanation-1: -Around 13.7 billion years ago, everything in the entire universe was condensed in an infinitesimally small singularity, a point of infinite denseness and heat. Suddenly, an explosive expansion began, ballooning our universe outwards faster than the speed of light.
Detailed explanation-2: -The universal origin story known as the Big Bang postulates that, 13.7 billion years ago, our universe emerged from a singularity-a point of infinite density and gravity-and that before this event, space and time did not exist (which means the Big Bang took place at no place and no time).
Detailed explanation-3: -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-4: -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.