Fast Radio Bursts (FRBs) are mysterious bright millisecond-duration bursts of radio emissions that up to now have only been observed billions of light years away in other galaxies. The radio bursts arrive first at high frequencies and then progressively sweep down to lower frequencies before disappearing completely and not recurring. FRBs have always been assumed to be caused by extreme catastrophic events in the distant Universe, but their true origin has to date been unknown. On April 28, 2020, a super-magnetized stellar remnant known as a magnetar blasted out a simultaneous mix of X-ray and radio signals never observed before. The flare-up included the first Fast Radio Burst ever seen from within our Milky Way galaxy and shows that magnetars can produce these mysterious and powerful radio blasts previously only seen in other galaxies.