Which famous 2006 galaxy cluster collision provided direct proof that dark matter exists separately from gas?
Chapter 1

The mystery of missing mass

Chapter 2

Mapping the invisible

Chapter 3

The runaway cosmos

Chapter 4

The ultimate fate of the universe

YOUR GOAL

Master of The invisible universe

Ch 2 · Mapping the invisible
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artiteacher Spiders of the cosmos spinning a web

Jul 12

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artiteacher Mapping the invisible

Tracing the ghost in the dark, mapping the pull that's holding the stars.

Jul 10

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artiteacher The Bullet Cluster smoking gun

Jul 12

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Spiders of the cosmos spinning a web

artiteacher Dark matter forms a vast, web-like scaffolding across the universe that guided the formation of the very first stars and galaxies.

Jul 10

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The Bullet Cluster smoking gun

artiteacher A colossal collision between two galaxy clusters in 2006 provided the most direct evidence that dark matter is a physical substance.

Jul 10

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Cosmic Hide & Seek
BETA

artiteacher Spot warped starlight to discover how invisible dark matter pulls galaxies together.

Jul 10

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Fun Fact

Cosmic magnifying glass: Gravitational lensing can stretch a distant, circular galaxy into a perfect glowing ring called an Einstein Ring.

Jul 10

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Glossary
gravitational lensing (noun)
The bending of light from a distant cosmic source as it passes through the gravitational field of a massive object. In 2026, researchers used this technique to map the universe's dark matter scaffolding across the constellation Sextans.

Jul 10

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Gossip

Which detection method sounds cooler?

Jul 10

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Quiz

Which famous 2006 galaxy cluster collision provided direct proof that dark matter exists separately from gas?

Jul 10

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artiteacher Cosmic magnifying glasses in deep space

Jul 12

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Quiz

Which space telescope, launched in 2023, was specifically designed to map the dark universe?

Jul 10

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artiteacher Deep underground hunts for ghost particles

Jul 12

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Quiz

What is the name of the vast, web-like structure of dark matter that spans the entire universe?

Jul 10

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Quiz

Why are dark matter detectors like LUX-ZEPLIN built deep underground in abandoned mines?

Jul 10

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Quiz

What material do underground dark matter detectors like LUX-ZEPLIN use to catch colliding dark matter particles?

Jul 10

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Quiz

What does the acronym WIMP stand for in dark matter physics?

Jul 10

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Quiz

What phenomenon occurs when the gravity of dark matter bends light from a distant galaxy like a lens?

Jul 10

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Quiz

What shape does light take when it is perfectly bent around a massive dark matter clump by gravitational lensing?

Jul 10