For many years, astrophysicists have theorized that an invisible material they call “dark matter” makes up the majority of the universe’s mass. Any behavior of objects in the universe that can’t be ...

The rotation of stars in galaxies such as our Milky Way is puzzling. The orbital speeds of stars should decrease with their distance from the center of the galaxy, but in fact stars in the middle and ...

Researchers, in a recent Physical Review Letters paper, introduce a new mechanism that may finally allow ultralight dark photons to be considered serious candidates for dark matter, with promising ...

In a study published in The Astrophysical Journal, Prof. Zhou Xia from the Xinjiang Astronomical Observatory (XAO) of the Chinese Academy of Sciences and collaborators have, for the first time, ...

What, wonders Julian Heeck, is the lifetime of the photon? It's not an outlandish question: adding a photon mass term to the Lagrangian of quantum electrodynamics would, admittedly, break gauge ...