Summary:
- Astronomers have developed a new technique that uses the light from distant quasars to study black holes in greater detail and more frequently.
- This method, called "reverberation mapping," allows scientists to measure the size and mass of black holes by analyzing the time delay between changes in the brightness of the quasar and the surrounding gas.
- The improved understanding of black holes gained through this technique could help reveal more about the evolution of galaxies and the universe as a whole.