Black Holes
Where gravity conquers light
Essential QuestionWhat would you see while falling into a black hole?
Explore the most extreme objects in the universe — regions of spacetime where gravity is so intense that nothing, not even light, can escape.
Explore the black hole
Rotate the model to study its geometry. The 3D object is included directly in this project.
Inspect the supplied model from every angle.
Move closer to examine the black hole form.
Use the concept guides to understand event horizons and gravity.
Concepts
Select a concept to explore in depth with multi-level explanations.
What Is a Black Hole?
A region of spacetime where gravity is so strong that nothing, not even light, can escape.
The Event Horizon
The boundary around a black hole beyond which nothing can escape — the point of no return.
The Singularity
The infinitely dense point at the center of a black hole where known physics breaks down.
Hawking Radiation
Theoretical radiation emitted by black holes due to quantum effects near the event horizon.
Types of Black Holes
Black holes are classified by mass: stellar, intermediate, supermassive, and primordial.
Gravitational Time Dilation
Time passes more slowly near a black hole due to the extreme warping of spacetime.
Spaghettification
The stretching of objects into long, thin shapes by extreme tidal forces near a black hole.
How We Detect Black Holes
Black holes are invisible but reveal themselves through their effects on surrounding matter and spacetime.
Timeline
View Full Timeline →John Michell proposes that a star could be so massive that light could not escape its gravitational pull — the first theoretical concept resembling a black hole.
Pierre-Simon Laplace independently proposes dark bodies using Newtonian gravity.
Albert Einstein publishes the field equations of general relativity, providing the theoretical framework for understanding black holes.
Karl Schwarzschild finds the first exact solution to Einstein's equations, describing the spacetime around a non-rotating mass — revealing the Schwarzschild radius.
Oppenheimer and Snyder show that a massive star can collapse into a black hole, producing a singularity.