Dust is everywhere in astrophysics — literally! It contains most of the heavy elements, forms the building blocks of planets, and dramatically alters our view of everything in the Universe. Yet its dynamics are remarkably poorly-understood. We recently discovered a new super-class of instabilities that manifest in a myriad of different ways, whenever dust moves through gas. These could provide an explanation for a number of decades-old astrophysical mysteries, from the formation of planets to the launching of stellar and galactic winds. For more, see https://arxiv.org/abs/1711.03975 and https://arxiv.org/abs/1801.10166
