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dark matter

Shedding Light on Dark Matter
Image: NASA

Shedding Light on Dark Matter

Galaxies, stars, planets...they're not enough. For the universe to look as it does, it must contain far more matter than we've been able to detect so far.

What is this extra stuff? It doesn't give off or absorb light or seem to interact with ordinary matter except through gravity.
Is it made of a strange new particle? A 30-year search has turned up nothing. Dive into the dark matter mystery here.

TED
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Cosmic Perspective: Dark Matter

Cosmic Perspective: Dark Matter

It's humbling, says astrophysicist Neil deGrasse Tyson, that we know nothing about 96% of the universe. But to a scientist, it's also "a thrilling prospect." Find out why. More...

Video
NOVA/PBS
Dark Matter

Dark Matter

Once astronomers began weighing distant galaxies, they began realizing that dark matter must exist. Let Hank Green explain. More...

Video
SciShow
Dark Worlds: A Journey to a Universe of Unseen Matter

Dark Worlds: A Journey to a Universe of Unseen Matter

Could there be dark matter atoms and molecules, even planets and people, all hidden from our view? This interactive feature explores some wild ideas. More...

Interactive
Scientific American
No WIMPS in Space?

No WIMPS in Space?

If dark matter is made of particles called WIMPS, as many scientists suspect, then WIMPS should sometimes collide, producing gamma rays. Take a look at the (so far unsuccessful) search. More...

Video
NASA
The Dark Matter Mystery

The Dark Matter Mystery

How do you hunt for something that gives off no light and never seems to interact with anything else? As this video shows, you might try burying yourself half a mile under ground.
More...

Video
NOVA/PBS
Dark Matter Core Defies Explanation in Hubble Image

Dark Matter Core Defies Explanation in Hubble Image

Scientists thought they knew how dark matter would behave when galaxies collided. Then the Hubble Space Telescope captured the aftermath of a colossal cosmic smash-up. More...

Article
Space Telescope Science Institute
The Energy Distribution of the Universe

The Energy Distribution of the Universe

About 96 percent of the universe is made up of dark matter and dark energy. X-ray astrophysics is crucial to understanding the dark, mysterious parts of the universe. Take a look. More...

Interactive
Chandra X-Ray Observatory
What Is Dark Matter?

What Is Dark Matter?

Scientists know more about what dark matter is not than what it is. But they have a few ideas. Get the details. More...

Article
NASA

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