# GENERAL KNOWLEDGE

## GK

### THE UNIVERSE

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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?
 A Gravity collapses the universe back together in a “Big Crunch” B The universe keeps expanding forever ending in a “Big Rip”. C The universe stops expanding and becomes static. The “Big Freeze”. D The universe instantly disappears from existence. The “Big Vanishing”?
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.

There is 1 question to complete.