Ok, so I was just thinking about this today. First off, I was thinking about absolute zero, and how they say it's impossible, but then I thought about what the average temp. of the universe is. According to several internet sources, the current average temp is about 2.73 kelvin. I was wondering, how is that possible if the universe is infinite if the average temperature is above 0 (because you would end up getting all the temperatures over the area, which is infinite, so you would end with an average temp of 0)?