What is the estimated size of aboservable universe ?

The estimated size of observable universe is of the order of………

Write size of observable universe and nucleus

What is the estimated radius of the universe?

What is the order of magnitude of the following Size of observable universe .

Why is radium still found in nature? Its half-life is 1600 years, and the estimated age of the universe is five billion years.

Suppose you are told that the linear size of everything in the universe has been doubled overnight. Can you test this statement by measuring sizes with a meter stick? Can you test it by using the fact that the speed of light is a universal constant and has not changed? What will happen if all the clocks in the universe also start running at half the speed?

Suppose you are told that the linear size of everything in the universe has been doubled overnight. Can you test this statement by measuring sizes with a meter stick? Can you test it by using the fact that the speed of light is a universal constant and has not changed? What will happen if all the clocks in the universe also start running at half the speed?