De Sitter Space

De Sitter space is a solution in the context of general relativity that describes a universe dominated by dark energy, leading to a positive curvature of space. It represents an expanding universe where gravity is weak but still present, resulting in a uniform, accelerating expansion. This model helps scientists understand the observed acceleration of the universe's expansion, as seen with distant galaxies moving away from us. De Sitter space is important in cosmology as it provides insights into the universe's fate and the role of dark energy in shaping its geometry.