Gravity doesn't always hide the heart of a dying star ⚡ экспресс
Scientists have discovered that in more complex versions of gravity, black holes don't always hide their core. The more intricate the theory, the more likely a collapsing star will produce a "naked" singularity, visible from outside. Imagine that instead of an eternal prison for light, we get an open window into the most extreme states of matter—where might that lead us?
Ordinary gravity is like soft rubber. A dying massive star bends it so deeply that it forms a black hole — a trap from which nothing, not even light, escapes. Physicist Roger Penrose suggested that nature always hides the core behind such 'cosmic censorship'.
However, in a new study, scientists considered a case where spacetime behaves like a very springy rubber. Adding stiffness to the equations of gravity, they found: the star still collapses, but the membrane doesn’t seal into an impenetrable sack. Light from the center bursts out. Imagine a trampoline: a heavy ball pushes it down, but if the trampoline is too tight, the edges don’t meet, and the ball remains visible.
Such 'naked' cores aren't just an abstraction. They could reveal themselves through bursts of gravitational waves or particles, allowing astronomers to peer into the world of quantum gravity. Strikingly, the mathematical additions that stiffen the rubber appear naturally in string theory — perhaps this is happening in the real Universe.
🎯 Penrose, a Nobel laureate, coined the term 'cosmic censorship' in 1969, but now his hypothesis is challenged in theories with extra spacetime stiffness.