is drawn by visualising the Big Dipper/Great Bear in the four phases of revolution around the pole star. Comet In their 1985 book Comet, Carl Sagan and Ann Druyan argue that the appearance of a rotating comet with a four-pronged tail as early as 2,000 years BCE could explain why the swastika is found in the cultures of both the Old World and the . The Han dynasty Book of Silk (2nd century BCE) depicts such a comet with a swastika-like symbol. Bob Kobres, in a 1992 paper, contends that the swastika-like comet on the Han-dynasty manuscript was labelled a "long tailed pheasant star" (dixing) because of its resemblance to a bird's foot or footprint. Similar comparisons had been made by J.F. Hewitt in 1907, as well as a 1908 article in Good Housekeeping. Kobres goes on to suggest an association of mythological birds and comets also outside of China. Four winds In Native American culture, particularly among the Pima people of Arizona, the swastika is a symbol of the four winds. Anthropologist Frank Hamilton Cushing noted that among the Pima the symbol of the four winds is made from a cross with the four curved arms (similar to a broken sun cross), and concludes "the right-angle swastika is primarily a representation of the circle of the four wind gods standing at the head of their trails, or directions." Prehistory According to Joseph Campbell, the earliest known swastika is from 10,000 BCEpart of "an intricate meander pattern of joined-up swastikas" found on a late paleolithic figurine of a bird, carved from mammoth ivory, found in Mezine, Ukraine. It has been suggested that this swastika may be a stylised picture of a stork in flight. As the carving was found near phallic objects, this may also support the idea that the pattern was a fertility symbol. In the mountains of Iran, there are swastikas or spinning wheels inscribed on stone walls, which are estimated to be more than 7,000 years old. One instance is in Khorashad, Birjand, on the holy wall Lakh Mazar. Mirror-image swastikas (clockwise and counter-clockwise) have been found on ceramic pottery in the Devetashka cave, Bulgaria, dated to 6,000 BCE. Some of the earliest archaeological evidence of the swastika in the Indian subcontinent can be dated to 3,000 BCE. The investigators put forth the hypothesis that the swastika moved westward from the Indian subcontinent to Finland, Scandinavia, the