Relating to the origin, structure, and evolution of the entire universe as a subject of scientific study.
From Greek 'kosmos' (universe, order) + 'logia' (study of). Emerged in the 17th century as astronomy advanced and philosophers sought to understand the universe's place in existence.
Cosmological questions are among humanity's oldest: ancient cultures created origin myths, but only with modern telescopes could we actually see back nearly 14 billion years to the Big Bang itself.
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