Really old thread but I was browsing [url=http://www.greatdreams.com/three/three.htm] this site[/url] and found this image and it brought me back to this. I'm pretty sure the symbol isn't related to the Pleiades star cluster but instead has another meaning. I think that the big circle represents Earth and that the circles inside it represent The moon, Mercury, Venus, The Sun, Mars, Jupiter, And Saturn. BTW this all goes back to a symbol shown on a sweater. http://i.imgur.com/OtSMrnz.jpg [spoiler]Or I could be crazy and it's just a symbol that has no significance. [/spoiler]