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Description:Timeline of the metric expansion of space, where space (including hypothetical non-observable portions of the universe) is represented at each time by the circular sections. On the left, the dramatic expansion occurs in the inflationary epoch; and at the center, the expansion accelerates (artist's concept; not to scale). Source: Wikipedia

Hundred years of cosmology

Over the past four centuries, we have witnessed a huge and rapid growth in our understanding of the Universe. It started with the ideas on Gravitation and Celestial Mechanics in…

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