For the first time, scientists have found a way to examine the most mysterious region of a black hole — the event horizon — during the final moments of a cosmic collision. The breakthrough comes from studying the powerful gravitational wave signal produced when two black holes merged, revealing details hidden inside the “last sound” of their violent crash.
The discovery changes how researchers understand black holes, objects so extreme that even light cannot escape their pull. By analyzing the loudest gravitational wave ever detected, scientists identified a previously overlooked part of the signal that carries information from the area closest to the newly formed black hole’s boundary.
