Astronomers Watched a Fast Radio Burst Go Right Through a Star's Atmosphere

The universe is filled with things that go flash in the night. That includes fast radio bursts (FRBs). These are brilliant, powerful blips of radio emissions from distant and mysterious sources. Astronomers studying one called FRB 20190520B noticed something fascinating about its signals. They get polarized as they travel outward from the source. So, what’s …