Universality and scaling in gravitational collapse of a massless scalar field

I summarize results from a numerical study of spherically symmetric collapse of a massless scalar field. I consider families of solutions, scrSp, with the property that a critical parameter value, p^*, separates solutions containing black holes from those which do not. I present evidence in support of conjectures that (1) the strong-field evolution in the pp^* limit is universal and generates structure on arbitrarily small spatiotemporal scales and (2) the masses of black holes which form satisfy a power law M₁₇-p^*^, where 0. 37 is a universal exponent.