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What is the full scale of the universe? Will it ever be known?

Answer 1

My answer is based on the assumption that our universe extends around from where BB event happened. ESE Planck satellite's measurement ( 2015) puts us 13.82 billion light years from here..

Hubble constant Ho = (distance from BB center) / (expansion velocity). Planck's value of 1 / Ho is 13.813 billion years. Higher Ho gives lower age. A consensus on the value of Ho is awaited. Previous methods related the age of our universe to the distance of the farthest globular cluster of stars. This method uses the time 1/Ho, in billion year unit, as the age of the universe. A correction is made to increase it to 13.83 billion light years (bly). My note here suggests that this distance is radius of our universe. Therefore, our universe is observable, from our side. This is my analysis of estimates, from various sources.

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Answer 2

Elena Antonova

The estimated diameter of the observable universe is approximately 93 billion light-years. The extent of the universe beyond the observable portion remains unknown, as theoretical and technological limitations limit our current understanding.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.