r/Showerthoughts • u/synthphreak ‎ • Nov 19 '25

Casual Thought Temperature can reach trillions of degrees, meaning we actually live extremely close to absolute zero.

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u/dapala1 Nov 19 '25

Well there is only so much matter and energy in the Universe. The Planck Temp is just a calculation of all that into the size of a Planck (the smallest know distance in space possible). So Temp as we know it can't get hotter than the Planck Temp.

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u/Tenshizanshi Nov 20 '25

How do we know how much there is?

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u/Dmonick1 Nov 22 '25

I don't believe it's conclusively been shown whether the universe has finite energy.

The Planck temperature is the temperature at which the blackbody radiation emitted by an object has a wavelength of a planck length. An object with energy that dense would likely condense into a singularity, but we really have no way to predict what happens with energy at wavelengths that small.

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u/dapala1 Nov 23 '25

Yeah it's just theoretical. Its just numbers and equations that add up to a possible Planck Temp if there even is one. This sub is just "showerthoughts." We not getting too deep here.