Dark Matter

By entangling the motion and quantum properties of a beryllium crystal, scientists have achieved unprecedented precision for measuring electromagnetic waves.

You may have heard about the "cosmology crisis:" Different methods of measuring the age of the universe are giving different results, and cosmologists have no idea why.

Why is the universe the way it is? Over the years, scientists have explored many ways to explain the cosmos, leading to some crazy-sounding ideas.

Dark matter could be even weirder than anyone thought, say cosmologists who are suggesting this mysterious substance could interact with itself in a higher dimensional universe.

Astronomers may not know what dark matter is, but they do know that galaxies are supposed to contain a lot of the shadowy, invisible substance.

The community ponders about the most important questions in space exploration and interrogates dark matter.

The Dark Energy Survey just released its most comprehensive results. But did they really prove Einstein wrong?

If you'd like to "bake" a universe, you need two essential ingredients and one optional ingredient.

Researchers propose learning more about dark matter by looking for its effects inside exoplanets.

A new study suggests that annihilating dark matter particles may explain the Milky Way center's mysterious glow.

Evidence of collisions between black holes and neutron stars suggests dark matter might consist of concentrations of primordial black holes.

Astronomers discovered a radio structure that looks like a gigantic jellyfish, though it only glows in certain wavelengths.

Theoretical physics is supposed to be about pure, crisp ideas. But physics is done by humans, and human society brings messiness to any endeavor.

In theoretical physics, as in all human endeavors, identity matters.

Nearly a century after dark matter was first proposed to explain the motion of galaxy clusters, physicists still have no idea what it’s made of.

Scientists are finally figuring out how much dark matter — the almost imperceptible material said to tug on everything, yet emit no light — really weighs.

Astronomers may be getting closer to discovering as-yet hidden cosmic secrets, such as the nature of dark matter and the presence of widespread distortions in space-time.

What if there is more than one cosmological agent for dark energy? This mixture would have strange effects in our universe, making it potentially detectable with upcoming surveys.