Natural science is the old term for astrology and astronomy before they were separated.
To understand the cosmological model the ancients described, we need to go out from a geocentric fixed unmovable Earth with the celestial spheres moving overhead around us.
Our heritage of knowledge seems to have lost. Now over the past 30 years plus, excellent translations on this subject have come out.
Not to be mistaken for the modern new age astrology that has hijacked the pure form taken it out of balance and thrown a dose of psychology at it.
Until the years getting the first translations of our astrological heritage Vedic Astrologers have a large part of this knowledge preserved. In the Vedic tradition are traces of Hellenistic influence. In the 8th century, all went underground in Arabic from which now well-documented translations are made available.
At universities, you can find Hermetic Philosophies but nothing practical it's still in the corner of ridicule.
The words of Sri Yukteswar can only humble you for the knowledge this ancient understanding of our celestial body is.
Yogananda; "I don't believe in astrology."
Sri Yuktaswar; "It is never a question of belief; the only scientific attitude one can take on any subject is whether it is true. The cosmos would be fairly chaotic if its laws could not operate without the sanction of human belief. "Charlatans have brought the stellar science to its present state of disrepute.
Astrology is too vast, both mathematically and philosophically, to be rightly grasped except by men of profound understanding. If ignoramuses misread the heavens and see there a scrawl instead of a script, that is to be expected in this imperfect world. One should not dismiss the wisdom with the 'wise.'
Quote from Sri Yukteswar, in "An autobiography of a Yogi" by Paramhansa Yogananda,
Chapter 16, "Outwitting the stars".
"All parts of creation are linked together and interchange their influences. The balanced rhythm of the universe is rooted in reciprocity. "Man, in his human aspect, has to combat two sets of forces-first, the tumults within his being, caused by the admixture of earth, water, fire, air, and ethereal elements; second, the outer disintegrating powers of nature.
So long as man struggles with his mortality, he is affected by the myriad mutations of heaven and earth.
"Astrology is the study of man's response to planetary stimuli. The stars have no conscious benevolence or animosity; they merely send forth positive and negative radiations. Of themselves, these do not help or harm humanity but offer a lawful channel for the outward operation of cause-effect equilibriums which each man has set into motion in the past.
"A child is born on that day and at that hour when the celestial rays are in mathematical harmony with his individual karma. His horoscope is a challenging portrait, revealing his unalterable past and its probable future results.
"The message boldly blazoned across the heavens at the moment of birth is not meant to emphasize fate-the result of past good and evil-but to arouse man's will to escape from his universal thralldom. What he has done, he can undo. None other than himself was the instigator of the causes of whatever effects are now prevalent in his life. He can overcome any limitation, because he created it by his own actions in the first place, and because he has spiritual resources which are not subject to planetary pressure.
"Superstitious awe of astrology makes one an automaton, slavishly dependent on mechanical guidance. The wise man defeats his planets- which is to say, his past-by transferring his allegiance from the creation to the Creator. The more he realizes his unity with Spirit, the less he can be dominated by matter.
The soul is ever-free; it is deathless because birthless. It cannot be regimented by stars. "Man is a soul and has a body. When he properly places his sense of identity, he leaves behind all compulsive patterns. So long as he remains confused in his ordinary state of spiritual amnesia, he will know the subtle fetters of environmental law. After deep prayer and meditation, he is in touch with his divine consciousness; there is no greater power than that inward protection."
Then they carry on with the related subject, metals, there healing properties an alchemy we have lost in the West. At least not so openly.