"George Dishman" schrieb im Newsbeitrag ...
The hydrogen in space is almost entirely the plain vanilla
flavour that takes more energy to contain than you get out.
Disappointing, but that's the problem in a nutshell.
Maybe that's so with current technology, but since all those stars
seem to manage all right I think it's just so that we haven't figured
out a working concept yet.

Lots of Greetings!
Volker