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Is absolute zero possible? How does this relate to space?

Answer 1

Lydia Allen

As the mass at absolute zero will be zero it is not possible to reach it.

There would be nothing to relate temperature to in the absence of mass.

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Answer 2

John Alexander

Yes, absolute zero is theoretically possible, as it represents the lowest possible temperature where a system reaches the lowest energy state. In space, temperatures can approach absolute zero in regions far from stars and other heat sources. This is because space is a near-perfect vacuum, meaning there is no medium for heat transfer, allowing objects to radiate their heat away into the cold expanse of space.

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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.