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dark matter

Inside this chamber, silica spheres probe for hidden extra dimensions, distortions of gravity, and dark-matter particles. | Peter DaSilva for Quanta Magazine
experimental physics

Tiny Tests Seek the Universe’s Big Mysteries

May 3, 2016

The search for exotic new physical phenomena is being led by huge experiments like the Large Hadron Collider. But at the other end of the spectrum lie tabletop experiments — small-scale probes of hidden dimensions, dark matter and dark energy.

dark matter

Debate Intensifies Over Dark Disk Theory

April 12, 2016

In the new, free-for-all era of dark matter research, the controversial idea that dark matter is concentrated in thin disks is being rescued from scientific oblivion.

Quantized Columns

Time’s (Almost) Reversible Arrow

January 7, 2016

The irreversibility of time may be a clue as to what makes up the universe’s dark matter.

Q&A

The Case for Complex Dark Matter

August 20, 2015

The physicist James Bullock explains how a complicated “dark sector” of interacting particles may illuminate some puzzling observations of the centers of galaxies.

astrophysics

Dwarf Galaxies Dim Hopes of Dark Matter

October 25, 2014

For five years physicists have been tantalized by possible evidence of dark matter in the Milky Way’s center. But new results from small satellite galaxies have complicated the story.

Katherine Freese
Q&A

In Search of Dark Stars

July 22, 2014

Katherine Freese, a physicist who will soon lead the Nordic Institute for Theoretical Physics, reflects on the hunt for dark matter and how dark matter heating may have produced the first stars.

Gamma Ray Excess
astrophysics

Case for Dark Matter Signal Strengthens

March 3, 2014

A new analysis strengthens the case that gamma rays emanating from the center of the Milky Way come from dark matter particles known as WIMPs.

particle physics

In Hunt for Dark Matter, Promises to Keep?

July 18, 2013

Whispers of the elusive particles are becoming stronger with a series of signals that appear to be zeroing in on a leading contender.

cosmology

Peering Into the Early Universe

March 7, 2013

Three “extremely large telescopes” poised to begin observations within a decade could help answer some of the universe’s oldest and best-kept secrets.