Unlike the AstroTime's website basics, this article was expressly translated to support and explain the insertion of this symbol of Life into the four corners of the most important and sacred pattern of the Creation, i.e. the universal Śrī Chakra yantra, realized thanks to the THEORY model in its error-free geometry and complete format, effectively fulfilling the Divine Proportion's [Golden Ratio] expansion, from the central SOURCE to the [synergetic perimeters & profiles of the] Petals fields, down to the four outer Gates driving to the living matter.
This aim, achieved at first in 2002, was recently completed in its planimetric perfection and given free to anybody, for meditation, study, scientific or architectural purposes.
Its four Portals' Cross being representative of the Four Elements, framing three times the whole Rose of the geometric composition, they were the most suitable to refer to the tetrahedron, since it crystallizes the Elements' dynamic deployment by the Zodiacal rotation, taking place throughout the cyclic alternation of the terrestrial seasons.
A concept best represented in this last innovative analysis by the spherical rolling of the tetrahedron, as the spindle and ultimate link between the Abstract and concrete, what is attested by some studies reported at the end of this article - surely more available nowadays.