Supernova neutrinos can seed >10% biomolecular handedness via amplified parity bias in interstellar clouds.

Summary. The manuscript proposes that parity-violating interactions of supernova neutrinos with chiral molecules in nearby interstellar molecular clouds can seed biomolecular homochirality. Neutrino-induced directional bias between L and D enantiomers is inserted into far-from-equilibrium autocatalytic racemization chemistry with stochastic fluctuations; the resulting Ito stochastic equations are claimed to amplify that bias to enantiomeric excesses exceeding 10%, in agreement with recent meteoritic chemical analyses. The authors scan model parameters inferred from observational values to identify a window in which initial homochiral seeds can form and be delivered to Earth by meteorites.

Significance. If the claimed amplification from weak supernova-neutrino parity violation to >10% enantiomeric excess is robust under observationally fixed fluxes, distances, and weak cross-sections, the work would supply a concrete astrophysical pathway linking core-collapse supernovae to the origin of terrestrial homochirality, with a direct comparison to meteorite measurements. Framing the problem with Ito stochastic dynamics for the probability distribution of enantiomeric excess is a technically interesting approach. Significance, however, rests almost entirely on whether the microscopic seed bias is large enough, without unphysical tuning, for the stated amplification to operate on astrophysically available timescales.