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How many galaxies are there in the universe?

Answer 1

#10^11#

it is believed that there are about #10^11# galaxies in the universe containing #10^11# stars (in each galaxy).

However, since there are many galaxies in the universe and they are all moving apart (according to the big bang theory, which indicates that galaxies move apart by increasing their respective velocities), that estimate of the number of galaxies and stars is only an estimate and may differ, but as of right now, it is thought to be accurate.

According to the pulsating universe theory, which states that the universe would expand for a very long time before collapsing again, an accurate count of galaxies, in my opinion, could only be determined when this universe collapses once more after billions of years.

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Answer 2

Lydia Allen

Estimates suggest there are roughly 100 billion to 200 billion galaxies in the observable universe.

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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.