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How small is earth compared to the universe?

Answer 1

Close to non-existent

Consider that the universe is 45 billion light years across. A single light year is 5.8 trillion miles or 9.4 trillion kilometers. Therefor the universe is 45 billion times 5.8 or 9.4 trillion miles or kilometers. And the earth is 7,900 miles in diameter. You would have a tough time seeing the earth from the nearest star and impossible from even the nearest galaxy.

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Answer 2

Levi Anderson

When considering the size of the observable universe—which is estimated to be roughly 93 billion light-years in diameter—Earth is infinitesimally small in comparison to the vastness of the 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.