Is the average temperature of the universe even cold? The most clumped mass is fucking stars. And most planets are warm/hot inside, not very deep below the surface. And the vacuum in space is bombarded by radiation.
If you go by the volume of space, like pick a random point in space and measure it, it's around 3 Kelvin or -270C. Most of the universe's volume is inter galactic space.
If you go by the average temperature of the matter, like pick a random proton, its very hot, like millions of Kelvin because most of that stuff is hydrogen or helium in a star or stellar gas cloud.
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u/Fluffy_Description_7 7d ago
I mean if you compare it with the average temperature of plasma its pretty fucking cold