The space between galaxies is not empty. In a new map of the early universe, those “blank” stretches take on a faint, hydrogen-blue glow that had mostly escaped surveys until now. Astronomers working ...

Are you looking for rock hard sci-fi? Sci-fi you could use to cut glass? Sci-fi so solid you could heave it through the tempered alumino-silicate glass pane separating a starship’s interior from the ...