Hubble constant

Etymology
After Edwin Powell Hubble, American astronomer

Proper noun

 * 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.

Translations

 * Arabic:
 * Bulgarian: зако́н на Хъ́бъл
 * Catalan: constant de Hubble
 * Chinese:
 * Mandarin: 哈勃定律, 哈勃常數
 * Czech: Hubbleova konstanta
 * Dutch: wet van Hubble
 * Estonian: Hubble'i seadus
 * Finnish: Hubblen vakio
 * French: loi de Hubble
 * German: Hubble-Konstante
 * Hebrew: קבוע האבל
 * Hungarian: Hubble-törvény
 * Ido: konstanto di Hubble
 * Indonesian: hukum Hubble
 * Italian: legge di Hubble
 * Japanese: ハッブルの法則
 * Norwegian: Hubbles lov
 * Polish: prawo Hubble'a
 * Portuguese: constante de Hubble
 * Russian: зако́н Ха́ббла
 * Serbo-Croatian:
 * Roman: Hubbleov zakon
 * Slovak: Hubblova konštanta
 * Slovene: Hubblov zakon
 * Spanish: ley de Hubble
 * Swedish: Hubbles lag