[Poincare]

but you'd have to have as much as a planet weighs in order to generate one G of gravity from it.

So I was kind to say "not completely". Your statement above (post 7) is beyond "nit-picking", it confounds mass and weight, and g (acceleration at Earth surface) and G (gravitational constant), and it does not address BookaT's proposition.

Get a mirror.

[Oberon]

I see this is the sort of discussion one cannot win. In fact, participating even this far makes me something of a schlemiel.

[sigh]