Question

Note on Cosmos in Detail

Answer 1

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here is your answer

The cosmos is the universe regarded as a complex and orderly system; the opposite of chaos.

The philosopher Pythagoras used the term cosmos for the order of the universe, but the term was not part of modern language until the 19th century geographer and polymath, Alexander von Humboldt, resurrected the use of the word from the ancient Greek, assigned it to his multi-volume treatise, Kosmos, which influenced modern and somewhat holisticperception of the universe as one interacting entity.

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Answer 2

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Intergalactic gas is so tenuous that it emits no light of its own. ... Instead astronomers study it indirectly by observing how it selectively absorbs the light coming from faraway sources known as quasars.

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