I'm trying to understand why the formation of a new star from the surrounding space/dust does not violate the 2nd Law of Thermodynamics. From Wiki...2nd Law of Thermodynamics...states that the total entropy of any isolated thermodynamic system tends to increase over time, approaching a maximum value So, why doesn't the gravitationally induced formation of a star (or planet/moon for that matter), which would sure seem to decrease the entropy of the system not violate this law. Again from Wiki...Entropy is the only quantity in the physical sciences that "picks" a particular direction for time, sometimes called an arrow of time. As we go "forward" in time, the Second Law of Thermodynamics tells us that the entropy of an isolated system tends to increase or remain the same; it will not decrease. Hence, from one perspective, entropy measurement is thought of as a kind of clock. Thanks in advance.