GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The universe has three possible fates. The correct one depends on the average density of the matter in the universe (critical density). Which of the following is not a possible end to our universe?
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Gravity collapses the universe back together in a “Big Crunch”
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The universe keeps expanding forever ending in a “Big Rip”.
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The universe stops expanding and becomes static. The “Big Freeze”.
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The universe instantly disappears from existence. The “Big Vanishing”?
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Explanation:
Detailed explanation-1: -Critical density is the value at which the Universe is at balance, and expansion is stopped. This value is estimated as (1 3)×10^-26 kg/m³ and it’s calculated when you take the matter-energy density of the universe and divide it by the matter-energy density of the universe that is required to achieve that balance.
Detailed explanation-2: -The fate of the universe may be determined by its density. The preponderance of evidence to date, based on measurements of the rate of expansion and the mass density, favors a universe that will continue to expand indefinitely, resulting in the “Big Freeze” scenario below.
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