The cosmos rarely sends a visitor quite like 3I/ATLAS. This interstellar comet, only the third ever confirmed to tear through our solar system from a distant star, has captivated and unnerved astronomers in equal measure.
While NASA assures the world that this magnificent piece of rock and ice poses no threat to Earth, one of the world's most provocative astrophysicists is raising a far more chilling question: Is this object truly natural, or is it a piece of ancient alien technology carrying a deadly chemical signature?
