The spin light of neutrino (SLn ) is a phenomenon of electromagnetic radiation by a massive
neutrino moving in external media that is originated owing to neutrino magnetic moment. In this
short paper we note on the importance of this effect in the light of its connection with the neutrino
magnetic moment, recap its basic properties in dense matter and give some general criteria for its
best efficiency in nature. On this basis we propose a set of possible astrophysical environments
where the SLn can be manifested in principle.