We can't presume to know the basis for alien technology and travel, and the side effects if any. And how do you know they would only want to view us as opposed to visit us? Now you are an alien psychologist? <img border="0" title="" alt="[Roll Eyes]" src="images/icons/default/rolleyes.gif" /> And even if we assume that aliens only "view" us, that still means their presence is "there", which is the main point. <img border="0" alt="[Ja]" title="" src="graemlins/default/ja.gif" />