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The use of astronomical symbols for the Sun and Moon dates to antiquity. The forms of the symbols that appear in the original papyrus texts of Greek horoscopes are a circle with one ray for the Sun and a crescent for the Moon. [3] The modern Sun symbol, a circle with a dot (☉), first appeared in Europe in the Renaissance. [3]
Planetary symbols are used in astrology and traditionally in astronomy to represent a classical planet (which includes the Sun and the Moon) or one of the modern planets. The classical symbols were also used in alchemy for the seven metals known to the ancients, which were associated with the planets, and in calendars for the seven days of the week associated with the seven planets.
The current astronomical symbols for the planet are a circle with an intersecting cross, , [1] and a globus cruciger, . Although the International Astronomical Union (IAU) now discourages the use of planetary symbols, this is an exception, being used in abbreviations such as M 🜨 or M ♁ for Earth mass. [2]
This is a compilation of symbols commonly used in astronomy, particularly professional astronomy. Age (stellar) τ - age; Astrometry parameters. ...
Pages in category "Astronomical symbols" The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes. ...
The symbols for Jupiter and Saturn are identified as monograms of the initial letters of the corresponding Greek names, and the symbol for Mercury is a stylized caduceus. [13] A. S. D. Maunder finds antecedents of the planetary symbols in earlier sources, used to represent the gods associated with the classical planets.
Cosmology is a branch of metaphysics that deals with the nature of the universe, a theory or doctrine describing the natural order of the universe. [36] The basic definition of Cosmology is the science of the origin and development of the universe. In modern astronomy, the Big Bang theory is the dominant postulation.
The Nebra sky disc, c. 1800–1600 BC. The Nebra sky disc (German: Himmelsscheibe von Nebra, pronounced [ˈhɪml̩sˌʃaɪbə fɔn ˈneːbra]) is a bronze disc of around 30 cm (12 in) diameter and a weight of 2.2 kg (4.9 lb), having a blue-green patina and inlaid with gold symbols.