Hubble's constant

Noun

Meaning

(cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today

Synonyms

Hypernyms

Examples

It maps bumps and wiggles in spacetime—the cosmic microwave background, or CMB—and reflects conditions in the early universe as set by Hubble's constant. Source: Internet

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