Why can’t a cloud with less than 0.08 the mass of the Sun become a star?
c. It will never get hot enough for fusion to start 0.08 M_Sun is the estimated minimum mass for a the core to become hot enough to initiate hydrogen fusion and become a main sequence star. Actually, at the limit mass and slightly below, the core temperature is high enough to initiate deuterium fusion. However, that’s a fuel of which there is very little available.
