Inside black holes

Chapter 1

The anatomy of a black hole

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Chapter 2

The four cosmic families

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Chapter 3

Extreme physics and spaghettification

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Chapter 4

Photographing the invisible

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YOUR GOAL

Master of Inside black holes

Ch 1 · The anatomy of a black hole

hue CERN actually made a black hole, but it was smaller than a proton.

hue Black holes can be any size, and some even hid inside quasi-stars.

hue Black Hole Anatomy

Past the event horizon, falling right in, no light escapes!

hue The glowing cosmic whirlpool

The glowing cosmic whirlpool

hue The glowing cosmic whirlpool

Fun Fact

Gravitational lensing: Black holes bend light like a cosmic magnifying glass, warping the image of stars behind them.

The infinitely tiny heart

hue The infinitely tiny heart

Glossary

event horizon (noun)
The boundary surrounding a black hole from which no matter or radiation can escape. In 2022, the Event Horizon Telescope captured the first direct image of this boundary around Sagittarius A.

Quiz

At what speed would an object need to travel to escape a black hole once inside the event horizon?

Gossip

Which black hole feature is the most terrifying?

My Little Black Hole

hue My Little Black Hole

hue The infinitely tiny heart

Quiz

What is the infinitely dense point at the center of a black hole called?

hue The point of no return

Quiz

What is the photon sphere of a black hole made of?

hue The bending ring of light

Quiz

What optical effect occurs when a black hole's gravity bends light from stars behind it?

Quiz

Whose theory of general relativity predicted the mathematical possibility of black holes?

Quiz

What causes the accretion disk around a black hole to glow so brightly?

Quiz

What type of radiation is primarily emitted by the superheated matter in a black hole's accretion disk?