13 Wild Things Scientists Have Discovered About Black Holes Recently

9. Tidal Disruption Events Reveal Black Hole Feeding Habits

Scientists have witnessed the violent spectacle of black holes shredding and consuming entire stars through tidal disruption events (TDEs), providing unprecedented insights into how these cosmic predators feed and interact with their stellar environments. When a star ventures too close to a black hole, the immense tidal forces stretch and tear the star apart, creating spectacular flares of radiation that can outshine entire galaxies for months or years. Recent observations have revealed that these events are far more complex and varied than initially thought, with some TDEs producing relativistic jets, others creating unusual spectral signatures, and many showing unexpected temporal evolution patterns. The most dramatic recent discovery involves AT2019qiz, a TDE that was caught in the act of disrupting a star, allowing astronomers to observe the entire process from the initial encounter through the subsequent accretion and outflow phases. Advanced modeling of these events has revealed that the outcome depends critically on the star's mass, composition, and orbital parameters, with some encounters resulting in partial disruption where the star survives but loses a significant fraction of its mass. Scientists have also discovered that TDEs can temporarily "awaken" dormant black holes, causing them to become active and launch jets for the first time in millions of years, providing natural experiments for understanding black hole activation mechanisms. The study of TDEs has revealed that black holes are surprisingly inefficient at capturing stellar material, with most of the disrupted star being ejected back into space rather than accreted, challenging assumptions about black hole growth rates and feeding efficiency in galactic centers.