Apparently, we Astrologers don't have to put much effort into determining the scientific underpinnings of Astrology (if there are any, of course)! Scientists are doing this on our behalf, as science gets ever closer to a scientific explanation for astrology - as you can see in the passage below (from the "European Space Agency's" "ESA's" site):
"Scientists have proven that sounds generated deep inside the Sun cause the Earth to shake and vibrate in sympathy. They have found that Earth’s magnetic field, atmosphere and terrestrial systems, all take part in this cosmic sing-along!"
