Greek Astronomy By Mackenzie Davis On Prezi

Many Greek astronomical texts are known solely by title, and perhaps by a description or quotations. Some elementary works have survived as a result of they were largely non-mathematical and suitable for use in faculties. Books in this class embrace the Phaenomena of Euclid and two works by Autolycus of Pitane Three essential textbooks, written shortly before Ptolemy’s time, were written by Cleomedes , Geminus , and Theon of Smyrna Books by Roman authors like Pliny the Elder and Vitruvius include some information on Greek astronomy. Well-known astronomers of antiquity edit

Within the 4th Century BC, Plato, and his student Aristotle, wrote numerous necessary treatises about the Geocentric Mannequin of the Solar System. According to Plato, the Earth was a stationary sphere at the centre of the universe. He also believed that the sun, moon and planets orbited the Earth on particular person spheres, which he believed explained the round movement of the celebrities and planets. Africans studied astronomy in medieval times” The Royal Society. 30 January 2006. Archived from the unique on 9 June 2008 Retrieved 3 February 2010

He talks in regards to the 4 components (earth, hearth air and water) which he says are only found on Earth. These parts each have their very own tendencies: earth is heavy and falls, hearth is light and rises. Motion is in straight strains. The heavier the item, the sooner it falls. The Earth and the heavens are, due to this fact, subject to totally different natural laws. Things on Earth are corrupted and topic to alter whereas the heavens are incorruptible and unchanging. Preuss, Paul. “Darkish Energy Fills the Cosmos” U.S. Division of Vitality, Berkeley Lab. Archived from the unique on 11 August 2006 Retrieved eight September 2006

In 2015, scientists plan to get a more in-depth take a look at Kerberos and Styx when the first spacecraft to fly by way of the Pluto system takes flight. The Solar has steadily increased in luminosity over the course of its life, increasing by forty% since it first grew to become a essential-sequence star. The Solar has also undergone periodic adjustments in luminosity that may have a major affect on the Earth. fifty two The Maunder minimal , for example, is believed to have brought on the Little Ice Age phenomenon through the Middle Ages 53 Nepohualtzitzin, a MesoamericanAbacus This web site let’s you play with an abacus. It has materials onastronomical calculations of the precolombian cultures.

A hierarchical structure of matter began to kind from minute variations in the mass density. Matter amassed within the densest regions, forming clouds of gas and the earliest stars These huge stars triggered the reionization course of and are believedhave created many of the heavy parts in the early universe, which, via nuclear decay, create lighter elements, permitting the cycle of nucleosynthesis to continue longer. seventy seven American non-revenue science research group SETI Institute mentioned the moon earlier generally known as P4, which was found in the summertime of 2011, has been named Kerberos, after the three-headed canine of Greek mythology.