GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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10-12 million years ago.
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60-65 million years ago.
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13-15 billion years ago.
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20-25 trillion years ago.
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Detailed explanation-1: -How Old is the Universe? Until recently, astronomers estimated that the Big Bang occurred between 12 and 14 billion years ago. To put this in perspective, the Solar System is thought to be 4.5 billion years old and humans have existed as a genus for only a few million years.
Detailed explanation-2: -Illustration of the expansion of the Universe. Scientists’ best estimate is that the universe is about 13.8 billion years old. But, like so many of the largest-scale properties of the universe, we are not entirely sure about its age.
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: -By measuring how the Universe expands over time, we can come to know what forms of matter and energy are present within it. Scientists confidently state that it has been 13.8 billion years since the Big Bang, with an uncertainty of less than 1%.