And, in case anyone was wondering why the Selby site hasn't been updated despite mountains of stuff sitting here waiting to be added, that would be because the university where I teach doesn't require students to take astronomy during the first semester so that they can be divested of the notion that the world revolves around them.
Unfortunately, it took MsCriseyde a bit longer to do this because she is engaged in trench warfare over a plagiarism case. A student is too lazy to write his/her own !@#$% paper, and I get tied up in months of meetings and paperwork because I had the unmitigated gall to report him/her to the dean by submitting printouts of the web sites s/he copied and to assign a zero on the paper. Somebody please remind me again what the hell honesty and ethics are good for?