A black hole is an object that’s so dense that gravity won’t allow anything to escape it — not even light. The zone that defines where light can escape and where it can never return is known as the event horizon. But what actually happens at this point of no return? If you crossed it, what would you see? PBS SpaceTime uses a little-known physics tool to explore these questions.

— Read on curiosity.com/topics/heres-what-might-happen-at-the-event-horizon-of-a-black-hole-curiosity