In the era of cosmic noon, 3 billion years after the Big Bang, two supermassive black holes are drawing close in galaxy J0749+2255. The MIRI infrared spectrograph on JWST captured emission from polycyclic aromatic hydrocarbons (PAHs) — organic molecules — not only in the cores but far beyond them. T
arXiv:2607.03913v1 · 2026-07-04