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Are there as many stars in the universe as there are grains of sand on the earth?

Answer 1

There are many, many more stars in the universe than there are grains of sand on the entire earth.

Roughly #1,000,000,000,000,000,000,000,000# stars are estimated to be in the universe, while an estimated #1,000,000,000,000,000,000# grains of sand exist.

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Answer 2

Elena Antonova

Estimates suggest there are about 10^24 stars in the observable universe, while there are roughly 7.5 x 10^18 grains of sand on Earth. Therefore, there are many more stars in the universe than grains of sand on Earth.

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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.