Astronomers discover a planet that's rapidly disintegrating, producing a comet-like tail

Astronomers have discovered a rapidly disintegrating planet 140 light-years from Earth using NASA's TESS satellite. The Mercury-sized world orbits its star every 30.5 hours, shedding material equivalent to Mount Everest each orbit and trailing a 9-million-kilometer-long tail of debris, potentially disappearing completely within 1-2 million years.