</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (N0WVA @ Jan. 10 2004,19:43)</td></tr><tr><td id="QUOTE">Now, with no atmosphere for a shield, how in the world will a moon base survive? Sheer luck?[/QUOTE]<span id='postcolor'> The way this would be accomplished is by building a ship, so to speak, that lays flat on the surface. The interior would have to be sealed at all times to keep the inside atmosphere in check. No attempt would be made to create an outer atmosphere on the Moons surface. Weight of the structure would be less of an engineering factor but the interior pressurization* would be the main thing in structural integrity*. Therefore, very thick walls. *Spell check said everything is ok but it just doesn't look right today.