The degree to which this is ever true is the degree to which astrology has merit. Now, you have to remember that when the fundaments of astrology where set, accross many cultures, people were paying a lot more attention to the skies, the Moon and the sun but also the stars, largely because they relied on them to tell time and locate themselves. Today we have watches and gps and maps, so we might be bothered to glance at a full moon if it intrudes into our eyeline. And then we might notice some correlations between it and what is happening in our environment, and compare it to, say, a new Moon or a crescent. In those times, they would be paying close attention to Mercury’s position, speed and trajectory in relation to Saturn and the Sun, let’s say, and also they would be possibly noting some correlations with their environment, and comparing them to situations where Mercury’s characteristics differed.
Are there magnetic fields, are there rays, are there energies, who cares. Supremely unimportant. Astrology is only relevant insofar as this
remains true. This is what used to be called religion, and people weren’t smartasses about it because astrologers and alchemists hadn’t yet developed the technology for watches, gps and maps.