Dark Matter More than 80 years ago, the German physicist Fritz Zwicky theorized the existence of an invisible substance whose gravity holds galaxies together. He called it Dunkle Materie: Dark Matter – and to this day we have no great theory for what it might be. We have written about dark matter on our blog…Continue Reading Could Gamma Rays Shed Light on Dark Matter?
Category: Particle Physics
A Fifth Force of Nature? Forging New Frontiers in Physics
Nearly 400 years ago, as the legend goes, Sir Isaac Newton was sitting under a tree when an apple fell on his head. This gave him the idea that the laws of nature “up there” keeping the planets around the sun, must be the same laws “down here” keeping his feet on the ground. Newton…Continue Reading A Fifth Force of Nature? Forging New Frontiers in Physics
Rethinking Matter Formation in the Early Universe
The goal of particle physics is to categorize and mathematically describe the properties and interactions of particles. It turns out that there exist more particles than one might assume, and the story gets more complicated the further back you look in the universe’s history. Shortly after the universe began, what physicists call the Big Bang,…Continue Reading Rethinking Matter Formation in the Early Universe