Data froin an extensive air shower detector of ultrahigh-energy cosmic rays shows shado~ving of the cosmic-ray flus by the Moon and the Sun with signficance of 4.9 standard cleviations. This is the first observation of such shadowing. The effect has been used to determine that the angular resolution of the detector is 0.75' t",.,y3:.

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A limit on the electron-neutrino charge radius Irl is derived from a measurement of the weakneutral-current vector coupling constant gv obtained in electron-neutrino electron elastic scattering. The 90%-confidence interval for gv is -0.177 < gv < 0.187, which for sin2ew -0.227 implies that the v, mean-square charge radius is in the range -2.74x < ( r 2 ) < 4.88X cm2, or simply Irl < 2.2x 10-l6 cm. This is the first experimental bound on the v, charge radius, and is the same order of magnitude as bounds for v, structure.

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