accelerating universe

1. A phrase used to refer to the discovery that the Hubble expansion is not slowing down, as one would expect if only gravity were acting on the galaxies, but is actually speeding up as time goes by. (See dark energy.)

Example Sentences

Almost all attempts to get a handle on this question have required physicists to artificially extricate themselves from the accelerating universe and imagine viewing it from the outside.

From Scientific American

Although the cosmological constant allowed scientists to balance the Einstein field equations again, making them predict an accelerating universe like the one astronomers had observed, the value of the constant didn't make sense.

From Scientific American

Similarly, the horizon of an exponentially accelerating universe exhibits a de Sitter temperature.

From Scientific American

Instead, what would be needed is a more complete theory of gravity that explains the accelerating Universe.

From BBC

The theory of the accelerating universe is a work in progress.

From Scientific American