Hubble constant

noun

1. Also called: Hubble parameter. the rate at which the expansion velocity of the universe depends on distance away. It is currently estimated to lie in the range 60–80 km s ^–1 megaparsec ^–1

Example Sentences

As a result of this observation, Hubble concluded that the universe must be expanding, and his calculated rate of expansion became known as the Hubble constant.

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Unfortunately, since Requiem was not discovered until 2019, long after it had faded from view, it was not possible to gather sufficient data to measure the Hubble constant then.

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That observation spawned the idea of the big bang—and decades of bickering over the rate at which the universe is expanding, the Hubble constant.

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The number that describes the expansion goes by the name "the Hubble constant," appearing in multitude of different equations and models of the Universe and its constituents.

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Freedman led a collaboration in the 1990s called the Hubble Space Telescope Key Project, which calculated the Hubble constant more precisely than anyone had before.

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