A solar system is basically a star (sometimes a couple of them) with a tiny bit of grit left over. Not only does our Sun comprise 99.86% of the mass of our solar system, but it’s disproportionately “loud”. But in the first decade and a half of this century we’ve discovered dozens of new dwarf planets in our solar system and thousands of exoplanets in other solar systems. The shocking variety and preponderance of planets has completely rewritten our ideas about planetary and solar system formation. Our solar system is unique like a snowflake in a blizzard is unique.