A team of scientists has found a way to 'listen' to the event horizon of a black hole — the boundary where gravity is so intense that not even light can escape. By detecting a hidden signal never read before, they have extracted information from the very edge of the horizon in the instant before it formed, according to a new report.
Using this signal, the researchers measured the black hole's spin and surface gravity. The technique offers a novel method to probe the extreme gravitational environment where standard physics breaks down, providing data that could test whether Einstein's theory of general relativity holds in the most extreme conditions known.
The discovery focuses on an event horizon, typically considered impossible to study directly because nothing can carry news of it back to observers. The team's approach captures a faint trace carrying information from the split second before the horizon fully swallows all light and matter.
If the measurements align with Einstein's predictions, the finding would reinforce existing theory. But any discrepancy could hint at new physics beyond general relativity, such as quantum gravity effects. The work marks a potential breakthrough in black hole astrophysics.
Further observations are needed to confirm the signal and refine the measurements. The method could eventually be applied to other newly formed black holes, offering a deeper understanding of gravity's ultimate limits.