cosmic crash

Today’s new articles involve flow: the flow of positrons through the Universe and the flow of particles around the tiny cilia of corals. They involve beauty and mystery, as well. The particle flow, imaged in brilliant colors, won first place in the photography category of the 2013 Science/National Science Foundation International Science & Engineering Visualization Challenge. And positrons – the anti-matter opposites of electrons – have been found in large numbers flowing in near-Earth space. Weizmann Institute research points to an answer to one riddle: Why did a satellite monitoring…