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Why does the observable universe have an edge?

Answer 1

Unless amd until there is consensus among astrophysicista, there could be no affirmation that the observable universe has an edge

There is an edge in the gravitational field of a planet for its near-zero gravitation. One could imagine similar edges for the systems of stars and galaxies.

The idea of Edge's extension to our universe will not be possible until there is agreement on the dimensionality of our universe and related additional theories regarding the existence of multiple universes.

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Answer 2

Hunter Arthur

Because light travels slowly and the universe is finite, objects beyond a certain distance have not had enough time for their light to reach us since the beginning of the universe, giving the observable universe an advantage.

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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.