I was talking to a friend tonight, and among other things, he asked me if I could find out when (if?) all 9 planets (OK, 10, if we include Sedna )would be in alignment (from the point of view of looking down from solar north). Anybody know/know how to work it out? I've got a link to NASA's Solar System simulator, but that involves 'stepping through' time until I see that an alignment has ocurred. Anyone happen to know if/when this will happen?