- This article is about the astronomical instrument. For the fictional object in the Star Wars Universe, see Star Map (Star Wars).
A celestial map from the 17th century, by the Dutch cartographer Frederik de Wit.
Star chart of the south polar projection
for Chinese scientist Su Song
's (1020–1101) celestial globe
, from the horology
treatise Xin Yi Xiang Fa Yao
published in the year 1092 during the Song Dynasty
. A map projection is any method of representing the Surface of a sphere or other shape on a plane. Su Song ( style name: Zirong 子容 (1020&ndash1101 AD was a renowned Chinese statesman, astronomer, cartographer, Horology (from Greek ώρα, "hour time" and λόγος Logos, "study speech" lit The Song Dynasty ( Wade-Giles: Sung Ch'ao was a ruling dynasty in China between 960&ndash1279 CE it succeeded the Five Dynasties and Ten Kingdoms China ( Wade-Giles ( Mandarin) Chung¹kuo² is a cultural region, an ancient Civilization, and depending on perspective a National
A star chart is a map of the night sky. Astronomers divide these into grids to easily use them. They are used to identify and locate astronomical objects such as stars, constellations and galaxies. s are significant physical entities, associations or structures which current Science has confirmed to exist in Space. A star is a massive luminous ball of plasma. The nearest star to Earth is the Sun, which is the source of most of the Energy on Earth In common usage a constellation is a group of celestial bodies that are connected together in some arrangement typically stars to form a visible figure or picture A galaxy is a massive gravitationally bound system consisting of Stars an Interstellar medium of gas and dust, and Dark matter They have been used for human navigation since time immemorial. Navigation is the process of reading and controlling the movement of a craft or vehicle from one place to another A planisphere is a type of star chart. Note that a star chart differs from an astronomical catalog which is a listing or tabulation of astronomical objects for a particular purpose. An astronomical catalog or catalogue is a list or tabulation of Astronomical objects typically grouped together because they share a common type morphology origin
External links Here is a list of the 88 modern Constellations by their area in the sky measured in square degrees. This is a Partial list of the various lists of Astronomical objects Geological features of the solar system List of planets In Astronomy, an asterism is a pattern of Stars seen in Earth's sky which is not an official Constellation. Astrology (from Greek grc ἄστρον astron, "constellation star" and grc -λογία -logia) is a group of Systems Timeline of astronomical maps, catalogs and surveys ca 1800 BC - Babylonian star catalog ca In Astronomy, magnitude refers to the Logarithmic measure of the brightness of an object measured in a specific Wavelength or Passband, usually
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