= De Sitter universe
{wiki=De_Sitter_universe}
The De Sitter universe is a solution to Einstein's field equations of general relativity that describes a particular type of cosmological model. Named after the Dutch mathematician Willem de Sitter, this solution represents a universe that is both homogeneous and isotropic (the same in all directions) but with a positive cosmological constant, which is often associated with a form of dark energy driving an accelerated expansion of the universe.
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