The Cosmological 'Constant' (IMAGE)

University of Portsmouth

The Cosmological 'Constant'

Caption

The cosmological "constant" (illustrated by the straight yellow line) is introduced to explain the accelerated expansion of the Universe (shown as the expanding blue cone) due to the presence of dark energy. The study instead suggests that the contribution of dark energy to this expansion is time-dependent (grey curve). The uncertainty of this time dependency is also shown (blue shaded area).

Credit

Gong-Bo Zhao, NAOC and the University of Portsmouth.

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