not very good but good enough: http://en.wikipedia.org/wiki/Femtotech
ANd I were just brainstorming, your guess is as good as mine. But yea a tiny neutron star might work.
not very good but good enough: http://en.wikipedia.org/wiki/Femtotech
ANd I were just brainstorming, your guess is as good as mine. But yea a tiny neutron star might work.