Fast Radio Bursts (FRBs) (2007-present)

Fast Radio Bursts (FRBs) are one of space's most puzzling phenomena - intense bursts of radio waves lasting just milliseconds, yet releasing as much energy as the sun does in days. First discovered in 2007, these cosmic signals arrive from distant galaxies billions of light-years away. While most FRBs appear randomly, some repeat in mysterious patterns. Potential explanations range from highly magnetized neutron stars to speculative alien technology, though their true nature remains unknown. These mysterious millisecond bursts continue to challenge astronomers, with new detections adding complexity to what may be multiple types of FRB sources across the universe.