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[[File:Flammarion.jpg|Flammarion|thumb]] [[File:The_Nights_Long_Moments_(152181573).jpeg|The Nights Long Moments (152181573)|thumb|left]] [[File:Copernicus_-_Heliocentric_Solar_System.JPG|Copernicus - Heliocentric Solar System|thumb|left]] [[File:Ptolemaicsystem-small.png|Ptolemaicsystem-small|thumb]] [[File:Philolaus-and-Philomelus-Pythagorean-Book.jpg|Philolaus-and-Philomelus-Pythagorean-Book|thumb]] '''Cosmos''' refers to the universe regarded as a complex and orderly system; the opposite of chaos. The term is derived from the Greek word ''kosmos'' (κόσμος), meaning "order" or "ornament" and is used to describe the universe in a broad sense. The concept of the cosmos has been studied and theorized in many different ways throughout history, encompassing various fields such as [[astronomy]], [[philosophy]], [[religion]], and [[science]]. It is a term that can refer to the observable universe and its vast expanses of [[galaxies]], [[stars]], [[planets]], and other celestial bodies, as well as the laws of physics that govern their movements and interactions.

==History and Philosophy==
The idea of the cosmos has roots in ancient [[philosophy]], where philosophers like [[Pythagoras]] and [[Heraclitus]] contemplated the nature and origin of the universe. In the [[Platonic]] and [[Aristotelian]] traditions, the cosmos was seen as a well-ordered whole, governed by natural laws that could be understood through reason and observation. This view laid the groundwork for the development of [[Western philosophy]] and [[science]], influencing later thinkers and scientists such as [[Copernicus]], [[Galileo]], and [[Newton]].

==Astronomy and Science==
In the field of [[astronomy]], the cosmos is studied to understand the large-scale structure of the universe, the lifecycle of stars and galaxies, and the potential for [[extraterrestrial life]]. Modern astronomy has expanded our understanding of the cosmos through the use of advanced technologies, such as [[telescopes]] and [[space probes]], allowing scientists to observe distant galaxies, detect [[exoplanets]], and study cosmic phenomena like [[black holes]] and [[dark matter]].

==Cosmology==
[[Cosmology]] is a branch of [[astronomy]] that deals with the study of the origin, evolution, and eventual fate of the universe. Cosmologists seek to understand the [[Big Bang]] theory, which posits that the universe began as a singularity approximately 13.8 billion years ago and has been expanding ever since. This field also explores concepts such as the [[cosmic microwave background radiation]], which provides evidence of the universe's early state, and the [[accelerating universe]], which suggests that the expansion of the universe is speeding up due to [[dark energy]].

==Cultural and Religious Perspectives==
The concept of the cosmos also plays a significant role in various [[religion|religious]] and [[mythology|mythological]] traditions around the world. Many cultures have their own creation myths and cosmologies that explain the origin and structure of the universe, often involving gods, spirits, or other supernatural entities. In some religions, such as [[Hinduism]] and [[Buddhism]], the cosmos is viewed as an endless cycle of creation, preservation, and destruction, reflecting broader philosophical and spiritual concepts.

==See Also==
* [[Observable universe]]
* [[Cosmic microwave background radiation]]
* [[Dark matter]]
* [[Dark energy]]

[[Category:Astronomy]]
[[Category:Cosmology]]
[[Category:Philosophy]]
[[Category:Religion]]

{{astronomy-stub}}

Cosmos - Revision history

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