I guess the difference is more based on subtle historic reasons than strong definitions? Not sure on that one. I do know that Kelvins are based on an absolute z

I guess the difference is more based on subtle historic reasons than strong definitions? Not sure on that one. I do know that Kelvins are based on an absolute zero value, i.e. it's impossible to achieve a lower than 0 Kelvin temperature in the Universe, while Celsius in comparison feels like a very arbitrary choice being based on stuff that happen to something (water) at some places of the universe (1 atm of pressure). > On a side note, it would be awesome if all temperatures were in Kelvins You have my unconditional vote on that one! :-D