I have never seen this theory posted anywhere about rocky planet formation but here goes. Could the dust rings that are observed around new stars be molten hot dust. We all have obsered water droplets running down the edge of a sink or bathtub merge and become bigger drops. Are these dust rings made of mostly molten liquid material? When they collide with each other and even solid objects, they merge until they become the size of planetoids? The liquid planetoids and stray drops collide until they form planets. Collapsing hot gas clouds that form the star are usually hot enough for great distances to make their dust rings molten. When the stars cool the new rocky planets also cool and create a solid crust. Furthermore, If the gas cloud collapses and cools too quickly possible asteroid belts will form instead of planets or planetoids. Thought I would ask this question and present the theory.