In a first, CERN physicists succeeded in observing matter-antimatter imbalance in baryons, fundamental particles that make up ...

So physicists have been on the hunt for any sign of difference between matter and antimatter, known in the field as a ...

After analyzing a large number of observations recorded by NASA's Fermi space telescope, researchers have found a type of hypothetical dark matter particles, known as axion-like particles, either ...

Dark matter represents such a challenge to scientists because it makes up an estimated 85% of the matter in the cosmos but is effectively invisible because it doesn't interact with light. That ...

How is matter different from mass? These and other questions about the deepest levels of physics, answered inside.

So your Universe can be filled with them, and then they'll decay. If you have C- and CP-violation, however, then it's possible that there are slight differences between how the particles and ...

Particles that can make the leap between matter and antimatter are important because they lie at the core of one of the biggest mysteries of science: why the universe exists in the first place.

Celestial objects known as dark dwarfs may be hiding at the center of our galaxy and could offer key clues to uncover the ...

TRONDHEIM, Norway — Particles racing through space at nearly the speed of light pack energy millions of times greater than anything we can create on Earth. For decades, these cosmic bullets have ...

Scientists have long suspected the missing matter is hiding between galaxies, along filaments of gas strung between galaxy clusters in a vast cosmic web (SN: 1/20/14).). “But we haven’t been ...