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?
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
Earth’s atmosphere is crucial to the existence of life on this planet. The atmosphere both holds all of the oxygen we breathe and protects us from harmful high energy radiation from space. Without it, life on Earth might have never arisen. With this in mind, it is reasonable to wonder if planets beyond our own…Continue Reading He I Line in Exosphere