Dark Matter Percentage of Universe Mass
Chapter 1

The mystery of the missing universe

Chapter 2

The particle that cleaned up physics

Chapter 3

Catching a ghost with giant magnets

Chapter 4

The extreme cosmic laboratories

Ch 1 · The mystery of the missing universe
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007skaty Invisible ingredients make up the bulk of our universe.

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007skaty Cold Dark Matter

Moving so slow, / Clumping with gravity, / Making the galaxies!

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What holds everything together is often what we cannot see.

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007skaty Why dark matter must be cold to build the universe

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The cosmic puzzle of spinning galaxies

007skaty Fritz Zwicky's 1933 cluster study and Vera Rubin's 1970s galaxy measurements showed how invisible dark matter keeps fast-spinning cosmic structures bound.

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The recipe of our invisible universe

007skaty Invisible dark matter makes up 26.8 percent of the universe's ingredients.

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Axion Hide and Seek
BETA

007skaty Scan the cosmos for hidden axions to learn how we detect dark matter.

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Fun Fact

Dark matter mass: It makes up about 85% of all matter in the universe, meaning visible stars and planets are just a tiny cosmic minority.

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Glossary
dark matter (noun)
A hypothetical form of matter that does not interact with light and is believed to make up most of the matter in the universe. Fritz Zwicky first postulated this invisible mass in 1933 while studying the Coma galaxy cluster.

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Gossip

If you could see dark matter, what color would you want it to be?

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Quiz

Which Swiss astronomer coined the term dark matter in 1933 while studying the Coma galaxy cluster?

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007skaty Physicists search for a new particle to explain dark matter.

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Quiz

What surprising feature of spiral galaxies did Vera Rubin observe in the 1970s that proved dark matter's existence?

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Quiz

According to data from the Planck space observatory, what percentage of the universe is composed of dark matter?

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Quiz

What is the name of the mysterious force that makes up roughly 68.3% of the universe and drives its accelerated expansion?

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Quiz

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

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Quiz

Why can't neutrinos, which are abundant and rarely interact, make up the bulk of dark matter?

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Quiz

What does the word cold mean when physicists describe cold dark matter?

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Quiz

What is the name of the standard model of cosmology that combines dark energy and cold dark matter?

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