This turned out to be far too small an effect to see, but it gave us the motivation to study the exact nature of optical reflection. The general motivation for investigating the effect at shorter ...

The particle — which probably came from a distant ... The result was published on 12 February in Nature 1, and will be described in four preprints due to be posted on the arXiv preprint server.

Physicists at the Fermi National Accelerator Laboratory have found more evidence that a subatomic particle is behaving unexpectedly. And the reason could be evidence of a new, fifth force of nature.

These enigmatic particles might be the key to unraveling one of physics' greatest puzzles: the nature of dark matter ... be simply understood as a mirror reflection of regular matter.