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Cosmos can be defined as a complex and orderly system, such as our Universe; the opposite of Chaos. It is the Universe regarded as an ordered system. The philosopher Pythagoras is regarded as the first person to apply the term cosmos (Greek κόσμος) to the order of the Universe.
Cosmology is the study of the cosmos in several of the above meanings, depending on context. All cosmologies have in common an attempt to understand the implicit order within the whole of being. In this way, most religions and philosophical systems have a cosmology.
In physical cosmology, the term cosmos is often used in a technical way, referring to a particular spacetime continuum within the (postulated) multiverse. Our particular cosmos, the observable universe, is generally capitalized as the Cosmos.
In theology, the term can be used to denote the created Universe, not including the creator. In Christian theology, the word is also used synonymously with aion to refer to "worldly life" or "this world" as opposed to the afterlife or World to Come. The cosmos as originated by Pythagoras is parallel to the Zoroastrian term aša, the concept of a divine order, or divinely ordered creation.
- Cosmic Logos
- Cosmic View
- Cosmic Zoom
- Russian cosmism
- Carl Sagan and his published works "Cosmos"
- Cosmos: A Personal Voyage (Carl Sagan's television documentary series)
- Cosmos: A Spacetime Odyssey
- Macrocosm and microcosm
- Megaverse (disambiguation)
- Omega point (de Chardin)
- Omega point (Tipler)
- Omniverse (disambiguation)
- Definition in Merriam-Webster dictionary
- von Humboldt, Alexander; translated from German by E. O. Otté (1860). Cosmos: a sketch of a physical description of the universe 1. New York: Harper & Brothers. p. 69.
- "Concerning Aion and Aionios". Saviour of All Fellowship. Retrieved 22 April 2014.
- Cosmos – an Illustrated Dimensional Journey from microcosmos to macrocosmos – from Digital Nature Agency
- JPL Spitzer telescope photos of macrocosmos
- Macrocosm and Microcosm, in Dictionary of the History of Ideas
- Encyclopedia of Cosmos This is in Japanese.
- Cosmos(Russian) Illustrated Encyclopedia of Cosmos and Cosmic Law
- Greene, B. (1999). The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory. W.W. Norton, New York
- Hawking, S. W. (2001). The Universe in a Nutshell. Bantam Book.
- Yulsman, T. (2003). Origins: The Quest for our Cosmic Roots. Institute of Physics Publishing, London.