A singularity is a bit of space with infinite density (i.e. it has mass, but occupies an infinitesimal amount of space, and so its density is infinite).

Like Michael and Ray, I am a little interested how such can exist without some sort of event horizon being generated, even if it a minute event horizon.

Ofcourse, as I understand it, Ian seems to believe that true singularities cannot in fact exist. Without even starting to understand his maths, one does have an instinct that however attractive the notion of a singularity might be, one is wary of the notion of infinity, even when applied to density (it might also, to my mind, seem to contravene Heisenberg's uncertainty principle – but then, the problem always was that the relativity guys and the quantum guys could rarely agree about what things should be).

**G***eorge*