  Coherent interaction of solar neutrino with the moon and its implication are
investigated. We solve the Dirac equation with the moon potential and show that
a phase shift of the neutrino wave function becomes almost one unit if the
neutrino penetrates the moon. Spatial interference is generated for the
neutrino wave packets during eclipse and possibility of observing interference
effect that is similar to that of a double slit experiment is pointed out.
