The only applications [of the gravitational law] I could think of were, first, in some geophysical prospecting, in predicting the tides; nowadays, more modernly, in working out the motions of the satellites and the planet probes, and so on, that we send up– and also, modernly, to calculate the predictions of the planet’s position, which have great utility for astrologers to publish their predictions and horoscopes in the magazines.