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How many stars are there in the entire universe?

Answer 1

No one knows, they don't ever dare guess.

Multiply that by the estimated number of galaxies, which is also in the billions, and you get a constellation like the Milky Way, which has up to 3 billion stars on average.

Time is another obstacle. Although the universe appears to be only 13.4 billion light years away, most astronomers believe it is highly likely to extend to at least 100 billion light years and may even be infinite. For this reason, they never attempt to estimate the distance.

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Answer 2

Luke Allen

The exact number of stars in the universe is unknown, but estimates suggest there are around 100 billion to 200 billion galaxies, each containing millions to trillions of stars. This results in an estimated total of around 10^24 stars 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.