A solar symbol is a symbol representing the Sun. Common solar symbols include circles with or without rays, crosses or spirals. In religious iconography, personifications of the Sun or solar attributes are indicated by means of a halo or a radiate crown.
When the systematic study of comparative mythology first became popular in the 19th century, scholarly opinion tended to over-interpret historical myths and iconography in terms of "solar symbolism". This was especially the case with Max Müller and his followers beginning in the 1860s in the context of Indo-European studies. Many "solar symbols" claimed in the 19th century, such as the swastika, triskele, Sun cross, etc. have tended to be interpreted more conservatively in scholarship since the later 20th century.
The basic element of most solar symbols is the circular solar disk. The disk can be modified in various ways, notably by adding rays (found in the Bronze Age in Egyptian depictions of Aten) or a cross. In Ancient Near East, the solar disk could also be modified by addition of the Uraeus (rearing cobra), and in Ancient Mesopotamia it was shown as winged.
Egyptian hieroglyphs have a large inventory of solar symbolism because of the central position of solar deities (Ra, Horus, Aten etc.) in Ancient Egyptian religion.
The "Sun" ideogram in early Chinese writing, beginning with the oracle bone script (c. 12th century BC) also shows the solar disk with a central dot (whence the modern character ), analogous to the Egyptian heroglyph.