Cosmology explores the Universe from the smallest scales of subatomic particles to the largest cosmic structures. Understanding the Universe mandates considering both the matter and energy that comprise it, alongside the framework of spacetime. With the introduction of Einstein's General Theory of Relativity in 1915 and the Friedmann equation seven years later, key insights were gained into how matter and energy shape spacetime and vice versa. This interplay describes the complex behavior of the Universe and its ongoing evolution, proving fundamental to modern cosmology's insights and predictions.
In 1915, Einstein unveiled General Relativity, demonstrating the interdependent relationship between spacetime and the matter and energy it contains, reshaping our understanding of the Universe.
The Friedmann equation, derived just seven years after Einstein's breakthrough, is pivotal in cosmology, governing the expansion of the Universe and its large-scale structure.
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