The second of seven planetary conditions in Rudolf Steiner's cosmology, where the etheric body germ first joined the physical, and air and light came into being.
Old Sun is the second planetary condition described in Rudolf Steiner's spiritual science, following Old Saturn and preceding Old Moon and the present Earth. During this stage the human being received the germ of an etheric body alongside the physical body germ inherited from Saturn. Warmth densified into air, and light shone forth for the first time in cosmic evolution.
In Steiner's Own Words
We call the beings who went through their human stage on the Sun, the "Fire-Spirits," but you must not imagine that they were externally like the men of today. They went through their human stage in a different external form. The ancient Sun planet had an extraordinarily fine light substance, far lighter than our present substance. At that time there was no kind of solid or fluid, nothing but the gaseous element existed, and the bodies of the Fire-Spirits in spite of their being of human rank were gaseous bodies. One can go through the human stage in cosmic evolution in the most varied forms. Only the Earth-man goes through it in the flesh on Earth. The beings who had human rank on the Moon and who were already at a higher stage than man went through it in a kind of watery condition.
What it Means Today
Goethean phenomenology offers the closest contemporary point of access to what Steiner meant by Old Sun. Goethe asked the natural scientist to attend to what light actually does when a plant unfolds, not to reduce light to a measurable wavelength and then forget it again. The plant lifts toward light, opens its surfaces to light, becomes what light asks of it. For Steiner this is not an aesthetic observation but a memory. The forces that draw a leaf upward are the same etheric-life forces that first cohered around the human physical germ during the Sun-condition, when the cosmos itself was a sphere of warmth densifying into air and irradiated through with newly arisen light.
Bringing this into a practitioner's day means watching how living things behave around light and air rather than around objects. A seed germinates because warmth, air, and light meet inside it. A patient breathes more freely in a sunlit room than under a fluorescent strip. Biodynamic gardeners since 1924 have planned sowings around solar rhythm for this reason, not as superstition but as a working hypothesis that the etheric body of a plant still remembers Old Sun and responds to it. The term names what the modern eye keeps overlooking when it sees only chemistry where formative life is also at work. The Old Sun condition recapitulates in earthly evolution as the Hyperborean Epoch, the second earthly stage in which the etheric body germ joined humanity.
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