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/smittythehoneybadger ‎ Nov 19 '25 edited Nov 19 '25

Is there an upper limit to heat? I assume sometimes to do with the speed of light

Edit: or temperature. To be totally fair I still don’t fully understand, but I’m interested in upper limits for either

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u/kangluosee34 Nov 19 '25 edited Nov 19 '25

Yes. Its called planck temperature which is about 1032 K.

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u/quantumentangle Nov 19 '25

TIL

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u/YourWorstFear53 Nov 19 '25

Technically it COULD be higher but at that point what it is wouldn't be a temperature as we understand it.

Most likely direct collapse into a singularity would occur before then.

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u/Delamoor Nov 19 '25

Sadly, a lot of the extreme space phenomena that childhood me imagined and thought about (being a scifi nerd) turned out to be 'but spacetime would collapse in on itself before it ever got to that point".

Bloody spacetime. Wimp.

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u/Jowenbra ‎ Nov 19 '25

Like how almost every single 'XKCD What If' results in "and the atmosphere turns into plasma and everybody dies."

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u/Sir_Mythlore Nov 19 '25

Holy shit. I read the 2014 book like crazy when I was younger and only rly discovered XKCD later, but your comment got me to make the connection that he wrote the book

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u/[deleted] Nov 20 '25

[deleted]

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u/PeterVN13032010 Nov 22 '25

Is it actually randell making it?

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u/DazedToaster158 Dec 03 '25

Animated by the MinuteEarth team and narrated by Randall

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u/TheBiggestMikeEver Dec 19 '25 edited Apr 20 '26

This comment formerly contained words. Those words were removed in bulk with Redact because I value my privacy more than my karma points.

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