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Scientists have accidentally discovered a particle that has mass when it's traveling in one direction, but no mass while traveling in a different direction. Known as semi-Dirac fermions, particles with this bizarre behavior were first predicted 16 .. ...

To find black holes we usually have to look thousands of light-years away. But a new study suggests we could find evidence of them right here on Earth, as tiny tunnels they've carved out in rocks or old buildings.

Astrophysicists have detected the most energetic electrons ever recorded raining down on Earth. With trillions of times the energy of visible light, these cosmic rays seem to be coming from a powerful source relatively close to our solar system.

The first direct visualization of the shape of a photon has been created. These particles of light are impossible to photograph, but physicists at the University of Birmingham have now calculated their wave function to produce an accurate image of a ...

A new experiment has demonstrated something that sounds physically impossible - light itself casting a shadow. It turns out that if you manipulate a laser just right, then hit it side-on with another light source, it's possible to create this bizarre ...

Under the right circumstances, electrons can actually "freeze" into a bizarre solid form. Now, physicists at Berkeley Lab have created and taken the first ever direct images of this structure.