Dark Matter

Dark matter is a hypothetical form of matter thought to account for approximately 85% of the matter in the universe. Dark matter is called "dark" because it does not appear to interact with the electromagnetic field, which means it does not absorb, reflect, or emit electromagnetic radiation and is, therefore, difficult to detect. Various astrophysical observations – including gravitational effects which cannot be explained by currently accepted theories of gravity unless more matter is present than can be seen – imply dark matter's presence. For this reason, most experts think that dark matter is abundant in the universe and has had a strong influence on its structure and evolution. The primary evidence for dark matter comes from calculations showing that many galaxies would behave quite differently if they did not contain a large amount of unseen matter. Some galaxies would not have formed at all and others would not move as they currently do.

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Scientists Detect a Neighboring Galaxy Filled With Dark Matter

Earth’s surface may be teeming with trillions of dark matter particles

Dark matter from quantum gravity

Scientists Uncover New Physics in the Search for Dark Matter

How I gave a TED talk on dark matter

Physicists Have Built a Quantum Heat Pump To Detect Dark Matter

Dark matter could finally reveal itself through self-interactions

Dark horses in the cosmos - Could primordial black holes from the beginning of time explain ‘dark matter’, the mysterious missing mass in the Universe?

Black hole 'superradiance' phenomenon may aid quest for dark matter

Shredded dwarf galaxies may lack dark matter to hold them together

Scientists mapped dark matter around galaxies in the early universe

These Dwarf Galaxies Seem to Be Devoid of Dark Matter, And It Doesn't Make Sense

Dwarf Galaxies Found Without Influence From Dark Matter

The dark matter hypothesis isn't perfect, but the alternatives are worse

Jupiter Missions Could Also Help Search for Dark Matter

The Windchime experiment could use gravity to hunt for dark matter ‘wind’

Scientists Glimpse The Earliest Dark Matter Ever Observed in The Universe

Astronomers Measure the Signal of Dark Matter From 12 Billion Years ago

Most Distant Dark Matter Ever Found Dates Back 12 Billion Years

Planets made of dark matter may have blown up, and we could see them