The Universal Sigil
A large sigil representing the universe, symbolism under the read more.
Inside to outside and going clockwise, the symbols are as follows:
Radiation*
Water, Fire, Air
Magnetism, Forge (Personal interpretation: combustion / heat + pressure), Electricity*
Day, Carbon*, Oxygen*, Hydrogen*, Helium*, Sulfur, Night, Iron, Nitrogen*, Neon*, Magnesium, Silicon*
* While alchemical symbols represent aspects and elements of chemistry, alchemy was a very early form of chemistry and doesn't have symbols for everything. These symbols were made based off of personal interpretation, symbolism (helium based off of sun and air), or parts from another symbol (electricity being taken from part of copper which is known for its conductive properties).
Altogether, the inner ring of the sigil represents the constant flow of energy in space, taking place as the core of a star. The points on the star represent the passage of time and the fundamental elements that form the universe as we know them, the same elements that also make up and support life.
This sigil represents the following:
Life, death, space, and time
Any cosmic entity such as a planet, sun, etc.
Energy and the generation of energy (spell boosting, etc.)
Channeling cosmic energy
This sigil is meant to be charged by any of the processes in the center circle (aside from radiation outside of a safe form, of course) and used as a focus in cosmic spellcraft or worn by astrotheists!