Above you'll find the input form for the GraviScope (samples to the left). This program was originally written when I had the idea to research astronomical (and perhaps astrological) influences on geophysical movement (earthquakes, volcanoes, et cetera). Given a date and time, this program will calculate the positions of the planets in the sky, the orientation of the Earth to the sky, and the amount of gravitational pull exerted on Earth by each of the significantly massive bodies in our solar system.

The first page of output is a familiar, circular diagram, displaying the orientation of the sky (zodiac), with an Earth in the center which rotates to the proper position for that day and time. The second output page is a map which displays the points on Earth closest to (directly beneath) each of the bodies. The map is a simple, but well drawn, global map of land surfaces and tectonic plate boundaries.

While there may still be a connection between astronomical positioning and Earth movement, it should be remembered that the whole Earth rotates once every 24 hours and so faces every direction exactly once per (sidereal) day. Therefore, using stellar and planetary positions to understand Earth movements is tricky business, especially considering that we have only a limited understanding of geophysics in the first place. Movements in the sky often have to do with movements of many kinds on the Earth. Finding an algorithm that reliably works, however, could probably fetch a Nobel.