Always interesting when something is on front page, but doesn't have a single comment.<p>Anyone one know why that can happen?<p>Is it that a title sounds interesting, so people upvote (this one had 86 votes) but noone actually reads or finds anything of interest in the article to discuss?<p>Just curious.<p>I, for one, find it interesting that anyone with the necessary equipment can observe spaceships and satellites, etc and what they might be doing far away.<p>Are signals not encrypted or is this entirely via observation somehow?