Sagan suggests that in antiquity a comet could have approached so close to Earth that the jets of gas streaming from it, bent by the comet's rotation, became visible, leading to the adoption of the swastika as a symbol across the world.
A swastika generally takes the form of a rotationally symmetrical arrangement (a wheel) with four equally spaced legs of identical length each bent at 90 degrees in a uniform direction to create a pattern akin to a four-armed spiral.
In Hinduism, the clockwise symbol is called swastika symbolizing surya (sun), prosperity, and good luck, while the counterclockwise symbol is called sauvastika symbolizing night or tantric aspects of Kali.
According to Reza Assasi, the swastika is a geometric pattern in the sky representing the north ecliptic pole centred to Zeta Draconis.
He argues that this primitive astrological symbol was later called the four-horse chariot of Mithra in ancient Iran and represented the centre of Ecliptic in the star map and also demonstrates that in Iranian mythology, the cosmos was believed to be pulled by four heavenly horses revolving around a fixed centre on clockwise direction possibly because of a geocentric understanding of an astronomical phenomenon called axial precession.
The swastika was adopted by several organizations in pre–World War I Europe and later, and most notably, by the Nazi Party and Nazi Germany prior to World War II.
It was used by the Nazi Party to symbolize German nationalistic pride.Other theories attempt to establish a connection via cultural diffusion or an explanation along the lines of Carl Jung's collective unconscious.European hypotheses of the swastika are often treated in conjunction with cross symbols in general, such as the sun cross of pagan Bronze Age religion.The investigators put forth the theory that the swastika traveled from India via Tartar trade routes through Kamchatka to the Americas, where it appeared in both Aztec and Mayan civilizations.It also moved westward, according to these researchers, from India to Finland, Scandinavia, the British Highlands and other parts of Europe.This form of necklace is known as a Kali-Tiru, whilst the more elaborate type, which typically includes the central Shiva and Parvati on nandi medallion, a Thali.