Hello everyone this is my first post here. I'm sorry if my spelling is terrible. I am no physicists so I would like to ask if my thinking was going in the right direction. When I say energy I really mean electromagnetic radiation. The earth receives it constantly from the sun but there is no constant increase of the earth's temperature. Presumably because it's radiated in to the cosmos. I also know that all matter radiates depending on it's temperature. Know that is leading me to think that in a closed system with no input of radiated energy all the matter would drop down to the lowest energy state? Also I am interested to now if that is true then what implications does it make on Newtons first law of motion (also I have no idea if that law holds in general relativity)? Is it possible that a body flying trough proposed closed system will not change it's speed as a whole but the individual atoms would drop to 0 K. Sounds logical but then again not really, just more questions.