New picture of famous black hole reveals its swirling magnetic field

This swirling version of the now-iconic black hole at the centre of the M87 galaxy reveals the nature of the region’s magnetic field. The image was produced by the Event Horizon Telescope (EHT) — which in 2019 produced the first-ever image of a black hole. It shows polarised light emitted by jets hurled by the black hole, accelerating along magnetic fields as they go.