  Critical gravitational collapse and self similarity are used to probe the
mass distribution of subsolar objects. We demonstrate that at very low mass the
distribution is given by a power law, with an exponent opposite in sign to that
observed at high-mass regime. We further show that the value of this low-mass
exponent is in principle calculable via dynamical systems theory applied to
gravitational collapse. Qualitative agreement between numerical experiments and
observational data is good.
