Here's some interpretations of Pluto's meaning, not only according to astrology but also to spiritual science.
Anthroposophist Nicolaas de Jong poined to the fact that Pluto was discovered in 1930 and that, coincidentially, it coheres with the discovery of nuclear energy in the 30's.
The activity of the asuras, demons expelled from the sun, started in about the time when Steiner (1861-1925) was incarnated (or so he said). He predicted that the apocalypse prophecy of "the beast raising its head" would accomplish itself in 1933. Coincidentially, Hitler became chancellor that year.
Steiner also said that while on earth the Beast would point its head out of the Sea, the Christ would be coming back "ni the clouds", that is in the etheric realm, to people who are encountering difficulties and asking for help (he can duplicate himself to appear to anybody who really turns to him asking for help. Both the C's and Steiner talked about this capacity of Christ to duplicate itself indefinitely). This coming back of Christ in the clouds also manifest itself in 1) a greater capacity for clairvoyance, an awakening of clairvoyance, however not in some sort of revival of ancient clairvoyance, guidance of gods and magic but in the form of Conscious self-made moral Imaginations of the spiritual.
Pluto definitely is entangled in deep hell of earth's interior and centre, which is a portal nito pure evil and black magic. a fallen seraphim - angel of love - is in the center of the earth and from there directs the activity of asuras. He corresponds with the future Beast : Sorat, whose number is 666. Asuras would be insectoids, with an exoskeleton - an outward skeleton that became a shield, like insects. This coheres with the hardening tendency of nuclear forces, forces that keep the nucleus dense and closed onto itslef. Hords of Insectoids or asuras are the swarms of Locusts in Revelation. they stand behind and dominate other aliens and use them as efficient tools. Asuras radiate pure hate: one may look at one of the asuras when looking in the eyes of a person radiating a glowing hatred. This is warmth that is dark, not enlightened. In the warmth of teh blood, the ego incarnates in the human body. Asuras want to tear apart pieces of the ego. Then lucifer and ahriman take those and thus nurishes the eighth sphere (Lucifer preserves imaginations of the past and ahriman fills them with matter with a mineral quality), giving it real substance, a substance took from the ego, soul, etheric and physical substance stolen from us by asuras.
The global Soul of Mankind and Earth is Isis-Sophia. She is the inspiration of the boddhisattvas Mary and Mary-Magdalene and is linked directly to the Holy Spirit. Isis-Sophia or Natura or Soul was slained by Lucifer and sent away in space in the constellations of the stars. Likewise, Core-Persephone was kidnapped by Hades/Pluto. Zeus managed that she could go back to the surface during one half of the year, thus spending the other half in hell. the new Isis myth of Steiner tells that she was sent away in space. Astronomy and intellectualistic abstract (luciferic) knowledge like theology works against a proper reunion of Isis-Sophia and man, they separate them from each other. Her beauty is hidden by Lucifer in the uniform whiteness of the light of shining stars. We need to understand Her again. We can do this by gaining acces to special Cosmic Power Points and act in unisson with elementals, thus reuniting the below and the above geographically reflecting and incarnating the wisdom engraved of the stars. Devas are earth angels (but not at all like the angels we talk about most often) - they look upon the work of elementals, which are the Soul of Earth. Elementals must come under the supervision and love of higher hierarchies must we are the mediators, the intermediaries. This is why Lucifer and Ahriman act through us : we are the battle ground of this war of light VS darkness) must be guided. The wisdom of the meaning of nature comes from planetary spirits in the higher spîritual world, the knowledge of laws of nature come from spirits of cosmic cycles in the immediate lower (astral) spiritual level, the knowledge of the forces of nature comes from nature spirits in the etheric world, and finally, all these meet our eyes and other senses in the physical experience in the mineral -skeleton of nature - realm, close to the intellect. From the lower level to the higher, we must raise our understanding in order to free elemental beings that we condemn to a descending falling path because of our profane way to look at nature, that is the Maya/illusion of "materiality being the only reality".
UFOs come from the inner earth. They try to deceive us into believing that they are fomr other planets or stars, in order that we do not recognize them (so they can carry out their plan, inspired by Ahriman, to take over the planet and make us into their flock of servile sheeps, stuck in the materialized eighth sphere of a prisonplanet of their own). thisis dscribed by Nicolaas de Jong in hisarticles on "UFOs: the search for truth, reality and tools for their redemption." By the way, the liberation of mankind from the grip of lizzies and dracomonoids implies a cure of mother earth's elementals and fallen hierarchies we find in the inner earth. To do this we need the force of Christ and the knowledge of how to use it, given by Isis-Sophia, sister of Christ. We must apply cosmic forces in order to redeem these elementals sickened by one-sided technological-intellectual materialistic-terrestrial development (by our fault!). (Every one of the nine levels of the inner earth coheres with fallen spiritual hierarchies. They subordinate to themselves, for their own anti-earth goals, elementals which have fallen because of our technical advances which tear them apart from the ascending path of spiritual evolution (they are supposed to become humans in the future: the Coming Race, knowers of Vril utilisation... If they are torn from the proper ascending path, they fall, they can't help it, they don't have an ego, even though they have a certain degree of free choice. Fallen elementals who are supposed to be the future humans are thus 'coming from the future' from our point of view, so they can influence easily individuals in high places : corporations, politics, economics, military, revolutions, tyranny, etc.).
We need to make the stars of the cosmos fit with the earth again through conscious striving for unity between micro and macrocosm, Man and Earth, Inner Earth and Outward Cosmos. Then Isis-Sophia can be incarnated on earth and no longer 'dissociated' and keep away in the stars. Steine wrote a new Isis myth to replace the old Osiris myth which is no longer relevant today (this is because Egyptians living BC felt they lost Christ, that he was taken in the hellish inner earth by Set (=Ahriman). AD, we haven't lost Christ, he is there, we just miss a knowledge of Christ, the Sophia of Christ, Isis-Sophia.
There is great wisdom...
And here I go for a welcomed dreamy sleep state.