A Mysterious Pulse from the Past Recent findings in astrophysics have upended our understanding of fast radio bursts (FRBs), which are short-lived but immensely powerful pulses of radio waves emanating from deep space. Since the initial discovery of these enigmatic phenomena in 2007, scientists have cataloged over 1,000 occurrences. The notable case of FRB 20240209A marks a significant shift, as it originates from the periphery of an ancient elliptical galaxy, contrary to prior associations with active, young galaxies. This groundbreaking finding was detailed in two recent studies published in the Astrophysical Journal Letters. Tarraneh Eftekhari, a prominent researcher at Northwestern