Fast Radio Bursts (FRBs)

Fast Radio Bursts are intense, millisecond-long pulses of radio waves originating from deep space. First discovered in 2007, their exact cause remains a mystery. While most astrophysicists attribute them to natural phenomena like neutron stars, their highly energetic and repetitive patterns have led some to speculate they could be evidence of advanced alien technology, such as interstellar communication or propulsion systems. Currently, they remain one of astronomy's most intriguing unsolved puzzles.