GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which best describes the Big Bang Theory?
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The universe’s existing objects move randomly with the potential of colliding in about 13.5 billion years.
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Most objects in the universe are moving away from each other as a result of an event that occurred about 13.5 billion years ago.
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Galaxies collided about 13.5 billion years ago forming the present objects in the universe.
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Galaxies moved toward each other after an event that occurred about 13.5. billion years ago.
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Explanation:
Detailed explanation-1: -A: Universe is expanding all the time since the big bang.
Detailed explanation-2: -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.
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.
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