Back to Show
PBS Space Time
Have We SolvedThe Black Hole Information Paradox
Season 4
Episode 28
Black holes are the result of absolute gravitational collapse of a massive body: a point of hypothetical infinite density surrounded by an event horizon. At that horizon time is frozen and the fabric of space itself cascades inwards at the speed of light. Nothing can travel faster than light, and so nothing can escape from below the event horizon- not matter, not light, not even information.
Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
Support Provided By

14:28
Is our 3-D universe is just the inward projection of an infinitely distant boundary?

14:12
What if aliens are deliberately keeping quiet for fear that they might be destroyed?

15:13
So what exactly is an EMP, and how dangerous are they?

14:44
The terrible singularity at the heart of the black hole may be no more.

14:33
We may have solved the mysterious origins of supermassive black holes in our universe.

16:30
Does antimatter fall down, or does it fall up?

14:29
Could cosmic voids be driving the universe?

17:53
Is there a black hole hiding in the core of the Sun eating it from the inside out?

19:19
What if we aren't the first technological civilization on Earth?

19:03
Many World’s lack wavefunction collapse might be the key to the measurement problem.

18:32
The holy grail of physics is a quantum theory of gravity. What if it’s not possible?

18:32
Alien life will most likely be discovered by faint changes in the color of alien sunsets.