If the 0K, or 0°K, is the minimum existing temperature known to modern science, best known as the absolute zero, could there be a temperature below absolute zero in still undiscoveres distant regions of the universe?
In that case, perhaps we should start using a minus sign as a prefix to indicate that certain temperature is below absolute zero, like -50K (-50°K). Then the absolute zero wouln't be so absolute any more! What do you think? Is there such a possibility?