"Saw something launch into space today. Not sure what it was but the cloud it left behind was pretty amazing", Astronaut Mike Hopkins. Actually, it was a test launch of Russian Topol missile. Astronaut Luca Parmitano commented: "An immense cloud (of debris) forms outside the atmosphere after the disintegration (of the missile)".
Scientists have caught neutrinos turning from one type into another. The findings may help physicists understand an asymmetry in the early cosmos that allowed matter to beat out antimatter shortly after the big bang.