Wikipedia:Main Page history/2019 February 8

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Excerpt from the 1833 Nautical Almanac with symbols
Excerpt from the 1833 Nautical Almanac with symbols

Astronomical symbols are abstract pictorial symbols used to represent astronomical objects, theoretical constructs and observational events in European astronomy. The earliest forms of these symbols appear in Greek papyrus texts of late antiquity. The Byzantine codices in which many Greek papyrus texts were preserved continued and extended the inventory of astronomical symbols. Further new symbols were invented to represent many newly discovered planets and minor planets discovered in the 18th to 20th centuries. These symbols were once commonly used by professional astronomers, amateur astronomers, alchemists, and astrologers. While they are still commonly used in almanacs and astrological publications, their occurrence in published research and texts on astronomy is relatively infrequent, with some exceptions such as the Sun and Earth symbols appearing in astronomical constants, and certain zodiacal signs used to represent the solstices and equinoxes. (Full list...)

Today's featured picture

Amphitheatre of El Jem

Panoramic view of the Amphitheatre of El Jem, an archeological site in the city of El Djem, Tunisia. The amphitheatre, one of the best-preserved Roman ruins and a UNESCO World Heritage Site since 1979, was built around 238 AD, when modern Tunisia belonged to the Roman province of Africa. It is the third-biggest amphitheatre in the world, with axes of 148 m (486 ft) and 122 m (400 ft) and a seating capacity of 35,000, unique in Africa.

Photograph: Poco a poco

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