  We examine a description of available cross section data for symmetric space
star (SST) configurations in the neutron-deuteron (nd) and proton-deuteron (pd)
breakup reaction using numerically exact solutions of the three-nucleon (3N)
Faddeev equation based on two- and three-nucleon (semi)phenomenological and
chiral forces. The predicted SST cross sections are very stable with respect to
the underlying dynamics for incoming nucleon laboratory energies below $\approx
25$ MeV. We discuss possible origins of the surprising discrepancies between
theory and data found in low-energy nd and pd SST breakup measurements.
