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出典:Wiktionary
出典:『Wiktionary』 (2026/06/14 17:26 UTC 版)
Hubble volume (plural Hubble volumes)
出典:Wikipedia
出典:『Wikipedia』 (2011/04/28 15:40 UTC 版)
In cosmology, the Hubble volume, or Hubble sphere, is the region of the Universe surrounding an observer beyond which objects recede from the observer at a rate greater than the speed of light, due to the expansion of the Universe.
hubble volume