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In classical, medieval, and Renaissance astronomy, the Primum Mobile (Latin: "first movable") was the outermost moving sphere in the geocentric model of the universe. [ 1 ] The concept was introduced by Ptolemy to account for the apparent daily motion of the heavens around the Earth, producing the east-to-west rising and setting of the sun and ...
A Brief History of Astronomy – via Internet Archive. Dreyer, J. L. E. (1953) [1906]. History of Astronomy from Thales to Kepler (2nd ed.). Dover Publications. Eastwood, Bruce (2002). The Revival of Planetary Astronomy in Carolingian and Post-Carolingian Europe. Variorum Collected Studies Series. Vol. CS 279. Ashgate. ISBN 0-86078-868-7.
Galileo's drawings of Jupiter and its Medicean Stars from Sidereus Nuncius. Image courtesy of the History of Science Collections, University of Oklahoma Libraries. In the last part of Sidereus Nuncius, Galileo reported his discovery of four objects that appeared to form a straight line of stars near Jupiter. On the first night he detected a ...
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 played in their cultures". [3]
By historical astronomy we include the history of astronomy; what has come to be known as archaeoastronomy; and the application of historical records to modern astrophysical problems." Historical and ancient observations are used to track theoretically long term trends, such as eclipse patterns and the velocity of nebular clouds.
According to Plutarch and Stobaeus, the term planeta was in use by the time of Anaximander, in the early sixth century BC. [1] The relative positions of the planets, which in the reckoning of Democritus included the Sun and Moon, was the subject of debate, as was their number; in Timaeus, Plato counts only the five still regarded as astronomical planets, excluding the Sun and Moon.
He shows that there is a relationship between color and absolute magnitude for 90% of the stars in the Milky Way Galaxy. In 1913, Henry Norris Russell published a diagram that shows this relationship. Although astronomers agree that the diagram shows the sequence in which stars evolve, they argue about which way the sequence progresses.
Stargazing refers to amateur astronomy.. Stargazing may also refer to: . Stargazing Live, a BBC Two television programme; Stargazing, a CBeebies television programme; Stargazing darter (Percina uranidea), a species of fish