Comment by Bjartr
Why must there be a way?
A few notes: * There's no such thing as "absolute hot" state that meansno more heat can be added * Blackbody radiation means that above a certain temperature, regardless of what you make your mirror out of, it will be spontaneously emitting visible light at all times.
Indeed. There is only an absolute zero, that cannot get colder, but more heat is always possible as more heat means more rapid movement of elements. While absolute zero at 0 K means no movement.