Magnetic Field

@article{Smith1963MagneticF,
  title={Magnetic Field},
  author={E. J. Smith and Leverett Davis and PAUL J. Coleman and Charles P. Sonett},
  journal={Science},
  year={1963},
  volume={139},
  pages={909 - 910}
}
Mariner II magnetometer data gave no indication of a Venusian magnetic field. This implies, by comparison with spacecraft measurements near Earth and with theoretical models, that the magnetic dipole moment of Venus is at most 1/10 to 1/20 that of the earth. 

References

Frank presented at the Mariner II symposium
  • Am. Geophys. Union meeting