Chrysalis, just because Crowley used this star to rationalise his own beliefs it doesn't substantiate its universal or original symbolism. Fundamental Christians view all pentagrams as evil as they do most Pagan symbolism but this doesn’t mean that they justify its meaning either.
“A “point down” pentacle is nothing new- nor is it necessarily Satanic when it appears as such. Historical depictions of the pentagram were as likely to be points down as point up- a distinction between one or the other was rarely made by the ancients. Even today, one must not assume a point down pentagram is Satanic, as it is just likely to be Masonic, Wiccan, or simply upside-down. Some inexperienced Wiccans will occasionally claim that a point down pentacle is Satanic, but such a symbol has at times represented the Wiccan horned God, and is still today an emblem of the Second Degree initiation in Gardnerian Wicca.” http://symboldictionary.net/?p=1893
Manly P Hall (Secret Teachings of All Ages ) also goes into symbolism and is worth a read if you’re up to it as it is quite heavy!
This discussion deserves another thread as it is off topic.