The four known fundamental forces of physics are: gravity, electromagnetism, the strong and weak nuclear force. Because the standard model of particle physics seemed to be unable to explain dark matter - a substance which, according to scientists, makes up over 80% of the Universe's mass, the scientists have begun to look for another fundamental force. Theoretical physicists have proposed a variety of exotic force-carrier particles so far, the so-called dark photons being one of them. US scientists, however, argue that the newly discovered particle in question is not a dark photon, but may instead be a so-called "protophobis X boson", which would carry an extremely short-range force, acting over distances only several times the width of atomic nuclei.
The debate about dark matter and dark energy in scientific circles has only just begun. The question for meta-physicists is: where does a dark photon fit into the equation? Light and dark are just like order and chaos – a whole new understanding is sure to emerge soon!
Credit for Image at top of Page: MTA-Atomki