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Astronomy is the oldest of the natural sciences, dating back to antiquity, with its origins in the religious, mythological, cosmological, calendrical, and astrological beliefs and practices of prehistory: vestiges of these are still found in astrology, a discipline long interwoven with public and governmental astronomy.
The Antikythera mechanism was an analog computer from 150–100 BCE designed to calculate the positions of astronomical objects. Ancient Greek astronomy is the astronomy written in the Greek language during classical antiquity. Greek astronomy is understood to include the Ancient Greek, Hellenistic, Greco-Roman, and late antique eras.
Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets.
A. Ancient astronomers (16 C, 3 P) Ancient astronomical observatories (8 P) Ancient calendars (1 C, 4 P) Archaeoastronomy (2 C, 77 P) Astronomical objects known since antiquity (35 P)
Babylonian astronomy. Babylonian astronomy was the study or recording of celestial objects during the early history of Mesopotamia. The numeral system used, sexagesimal, was based on sixty, as opposed to ten in the modern decimal system. This system simplified the calculating and recording of unusually great and small numbers.
A classical planet is an astronomical object that is visible to the naked eye and moves across the sky and its backdrop of fixed stars (the common stars which seem still in contrast to the planets). Visible to humans on Earth there are seven classical planets (the seven luminaries). They are from brightest to dimmest: the Sun, the Moon, Venus ...
Archaeoastronomy. The rising Sun illuminates the inner chamber of Newgrange, Ireland, only at the winter solstice. Archaeoastronomy (also spelled archeoastronomy) is the interdisciplinary [1] or multidisciplinary [2] study of how people in the past "have understood the phenomena in the sky, how they used these phenomena and what role the sky ...
830 CE. The first major Arabic work of astronomy is the Zij al-Sindh by Muhammad ibn Musa al-Khwarizmi. The work contains tables for the movements of the Sun, the Moon, and the five planets known at the time. The work is significant as it introduced Ptolemaic concepts into Islamic sciences. This work also marks the turning point in Arabic ...