Most elements on this earth were made inside stars. Stars fuse the lighter elements into heavier ones. Stars, in turn, are born from hydrogen clouds, generally called nebulae. These clouds can be humoungus.
As far as i know, hydrogen is the lightest element, though it has been predicted that there are several lighter ones than hydrogen. But, from where does it come? Any ideas from the student or professional scientists/cosmologists and stargazers or students of life. I did several searches of the net for an answer. Haven't been able to find one, so far.
SS