Summary:
- Black holes are incredibly dense objects that have such strong gravitational fields that not even light can escape them. This makes them difficult to study directly.
- Researchers have discovered that the intense light emitted by the material swirling around a black hole can provide valuable insights into the black hole's properties through "light echoes."
- These light echoes, caused by the reverberation of the light off of the material surrounding the black hole, can reveal details about the black hole's spin, mass, and the structure of its accretion disk, helping scientists better understand these mysterious cosmic objects.