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Vinony

Hubble constant

proper noun

No English definition recorded for this entry.

L253918 on Wikidata ↗

Wiktionary

name

Etymology: After Edwin Powell Hubble, American astronomer

  1. 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 determines the age of the universe.