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Just how big is the Universe?

Answer 1

The radius of the observable universe is 46.6 billion light years (1 light year is the distance that light travels in a year). To put it another way, it would take 46.6 billion years to travel this distance at the speed of light, which is approximately 300 million meters per second.

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Answer 2

Hailey Alvarez

The observable Universe is estimated to be about 93 billion light-years in diameter.

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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.