The lunar atmosphere is so thin, that as a sandblast mechanism it is so close to zero it is zero.<br /><br />There might be a possibilty of the molecules in the tenuous atmosphere causing a chemical reaction with surface molecules that might decrease their adhesion to the molecule next door, which would make everything else more effective.<br /><br />It seem likely the UV, and the rest of the Sun'selectromagnetic spectrum (as opposed to the solar wind, which is particles) may also change the chemical structure of the surface, which could increase of decrease the surface adhesion properties. <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>