hubble constant

hub·ble con·stant

H h

Definitions of hubble constant words

noun hubble constant the ratio of the recessional velocity of galaxies to their distance from the sun, with current measurements of its value ranging from 50 to 100 km/sec per megaparsec. 1
noun hubble constant 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 0
noun hubble constant a ratio expressing the rate at which the universe is expanding, the so-called constant in Hubble's law, equal to the velocity of a receding galaxy divided by its distance from the earth: symbol, H0 0
noun hubble constant (astronomy) a number that expresses the rate of expansion of the universe; the velocity at which a distant object is receding from the Earth divided by its distance; its reciprocal gives the age of the universe. 0

before 1950

One of the 5% newest English words

First recorded in 1950-55; after E. P. Hubble

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exclamation

This term is known only to a narrow circle of people with rare knowledge. Only 2% of English native speakers know the meaning of this word.

According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

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