event horizon

Black holes explained: how they form from stellar collapse, what happens at the event horizon, why Hawking radiation matters, and what the information paradox means for physics.

Two perspectives, one terrifying destination. From spaghettification to the firewall paradox — the real physics of falling into a black hole.

What is a black hole, really? Event horizons, Hawking radiation, spaghettification, the nearest known black holes, and the first images of M87* and Sgr A*.

The event horizon is the point of no return — beyond it, not even light can escape. But what actually happens inside? The physics gets strange fast: time and space swap roles, the singularity may not be what we think, and quantum mechanics breaks everything.

Black holes aren't made of "stuff" in the normal sense — they're regions of spacetime where matter has been crushed past every known state. Here's what physics actually says is inside.