ハッブル体積
1. Hubble volumeIn cosmology, a Hubble volume, or Hubble sphere, is a spherical region of the Universe surrounding an observer beyond which objects recede from that observer at a rate greater than the speed of light due to the expansion of the Universe. The comoving radius of a Hubble sphere (known as the Hubble radius or the Hubble length) is, where is the speed of light and is the Hubble constant. The surface of a Hubble sphere is called the microphysical horizon, the Hubble surface, or the Hubble limit.
Read “Hubble volume” on English Wikipedia
Read “ハッブル体積” on Japanese Wikipedia
Read “Hubble volume” on DBpedia
Read “Hubble volume” on English Wikipedia
Read “ハッブル体積” on Japanese Wikipedia
Read “Hubble volume” on DBpedia
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