Retrograde motion--astronomy lecture note Rev-1

Wow! This is wild. The last post(Rev-0) I couldn't get the links to start up. I guess I should get started. The purpose of this post is to get a line of thought for an astronomy lecture.

Seems like everything starts with http://www.google.com

Mars postion throught "Your Sky" site.
http://www.fourmilab.ch/cgi-bin/Yourtel?aim=4&z=1

An explaination of retrograde motion of planets.
http://homepage.ntlworld.com/mjpowell/Astro/Naked-Eye-Planets/Planet-Movements.htm#Movements

A related site explaining in detail Mars motion.
http://homepage.ntlworld.com/mjpowell/Astro/Naked-Eye-Planets/Mars-Path-2007-8.htm

Mars 2007 calendar of events.
http://www.seds.org/~spider/spider/Mars/mars2007.html

A generic Gemini constellation site.
http://www.astronomical.org/portal/modules/wfsection/article.php?articleid=38

A sequence or logic path of more and more detailed information of mapping of the constellation Gemini.
http://www.hawastsoc.org/deepsky/constellations.html#o
http://www.hawastsoc.org/deepsky/gem/index.html
http://www.hawastsoc.org/deepsky/gem/gemp.html
http://www.hawastsoc.org/deepsky/maps/gem/gem2p.gif


Finally a collection of fine photos of the constellation Gem.
http://homepage.univie.ac.at/peter.wienerroither/pwafof2/GEM.htm
http://www.biochem.szote.u-szeged.hu/astrojan/gemini.htm
http://allthesky.com/constellations/gemini/constell.html

A collection of data links for specific stars in Gem.
http://www.astro.wisc.edu/~dolan/constellations/constellations/Gemini.html
http://www.seds.org/Maps/Const/Data/gemini_tab.html
http://www.alcyone.de/SIT/bsc/