A mysterious second flavor of hydrogen atoms — one that doesn't interact with light — may exist, a new theoretical study proposes, and it could account for much of the universe's missing matter while ...

With nuclear fusion in the news, we look to the sun. An old hand at the process, it squeezed its first hydrogen atoms together 4.6 billion years ago. On August 31, 2012 a long filament of solar ...

There are some potentially valid criticism about the Nuclear Salt Water Rocket (NSWR). The criticisms highlight real physical constraints. A hydrogenous mixture will moderate neutrons, preventing a ...