lDust adhered to
spacesuits both mechanically and electrostatically.
adhesion was due to barbed shapes of the dust grains.
adhesion was caused by charging of objects by the solar wind plasma,
triboelectric charging, and photoionization.
charging is caused by both differences in contact potential and frictional
transfer of charge between grains in contact.
The ionization of an atom or molecule by the absorption of a high-energy