23. The Mysterious Fast Radio Bursts
Fast Radio Bursts (FRBs) are intense, split-second radio signals originating from distant galaxies. Most have plausible natural explanations, such as neutron star collisions, yet a few remain enigmatic, sparking speculation about alien technology at work. Researchers have launched extensive monitoring campaigns to capture and analyze these fleeting signals, hoping to decode their true origins. The ongoing study of FRBs keeps the possibility of technological civilizations elsewhere in the universe alive. Read more at The Verge.