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e. World-systems theory (also known as world-systems analysis or the world-systems perspective) [3] is a multidisciplinary approach to world history and social change which emphasizes the world-system (and not nation states) as the primary (but not exclusive) unit of social analysis. [3] World-systems theorists argue that their theory explains ...
Theories for the formation of the Moon must explain its late formation as well as the following facts. First, the Moon has a low density (3.3 times that of water, compared to 5.5 for the Earth [49]) and a small metallic core. Second, the Earth and Moon have the same oxygen isotopic signature (relative abundance of the oxygen isotopes).
This theory holds that each natural type of object in the observed world is an imperfect manifestation of the ideal, form or "species" which defines that type. In his Timaeus for example, Plato has a character tell a story that the Demiurge created the cosmos and everything in it because, being good, and hence, "free from jealousy, He desired ...
The Big Bang theory, which explains the Evolution of the Universe from a hot and dense state, is widely accepted by physicists. In astronomy, cosmogony is the study of the origin of particular astrophysical objects or systems, and is most commonly used in reference to the origin of the universe, the Solar System, or the Earth–Moon system. [1 ...
The Heartland lays at the centre of the World Island, stretching from the Volga to the Yangtze and from the Arctic to the Himalayas.Mackinder's Heartland was the area then ruled by the Russian Empire and after that by the Soviet Union, minus the Kamchatka Peninsula region, which is located in the easternmost part of Russia, near the Aleutian Islands and the Kuril Islands.
Early human migrations. Putative migration waves out of Africa and back migrations into the continent, as well as the locations of major ancient human remains and archeological sites (López et al., 2015). Early human migrations are the earliest migrations and expansions of archaic and modern humans across continents.
Physical cosmology. This timeline of cosmological theories and discoveries is a chronological record of the development of humanity's understanding of the cosmos over the last two-plus millennia. Modern cosmological ideas follow the development of the scientific discipline of physical cosmology.
Young Earth creationists do not accept any explanation for natural phenomena which deviates from the veracity of a plain reading of the Bible, whether it be the origins of biological diversity, the origins of life, the geological, atmospheric, and oceanic history of Earth, the origins of the Solar System and Earth, formation of the earliest ...