Clues about how galaxies like our Milky Way form and evolve and why their stars show surprising chemical patterns have been revealed by a new study. The research, published in Monthly Notices of the ...

A hot gas dissociates very quickly, on the order of microseconds. One might think we could neglect the speed of dissociation, then, and model the gas in an equilibrium state. However, many things ...

Here’s What You Need to Know: As early as 1925, the Geneva Protocol banned the use of chemical weapons in international conflicts. The residents of Khan Sheikhoun probably thought they were in for ...

Here’s What You Need to Remember: The vast majority of civilian deaths in Syria occur due to bombardments by conventional artillery, mortars and aerial bombs—including those dropped by Russian and ...