Historically, the Pleiades have served as a calendar for many civilizations. The Greek name “Pleiades” probably means “to sail.” In the ancient Mediterranean world, the day that the Pleaides cluster first appeared in the morning sky before sunrise announced the opening of the navigation season.
In both myth and science, the Pleiades are considered to be sibling stars. Modern astronomers say the Pleiades stars were born from the same cloud of gas and dust some 100 million years ago. This gravitationally bound cluster of several hundred stars looms some 430 light-years distant, and these sibling stars drift through space together at about 25 miles per second. Many of these Pleiades stars shine hundreds of times more brightly than our sun.
Only six stars are distinctly visible to the naked eye. The ancient Greeks explained the sudden disappearance of the seventh star in various narratives. According to one, all the Pleiades were consorts to gods, with the exception of Merope. She deserted her sisters in shame, having taken a mortal husband, Sisyphus, the King of Corinth. Another explanation for the ‘lost’ star related to the myth of the Electra, an ancestress of the royal house of Troy. After the destruction of Troy, the grief stricken Electra abandoned her sisters and was transformed into a comet – everafter to be a sign of impending doom.
Esotherists say the Pleiades, therefore, open a higher level of consciousness in seekers, unfolding within them the potentials and gifts that are inherent and manifest on the higher planes of Being. Thus, the Pleiades have the power to manifest and energize the qualities that are inherent in the seed ideas of seekers by enhancing their intuitive and mental faculties, or the intelligence of the heart. http://www.plotinus.com/pleiades1_copy.htm