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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Epsilon Eridani in fiction ： ウィキペディア英語版 Epsilon Eridani in fiction The planetary systems of stars other than the Sun and the Solar System are a staple element in much science fiction. Epsilon Eridani is the fifth brightest star (by apparent magnitude) in the riverine southern constellation of Eridanus. An orange star slightly smaller and less massive than the Sun, and relatively close to the Solar System, it is frequently featured in works of science fiction. It is classified as a type K2 star, with the corresponding suggestion that it has a stable habitable zone and is well suited for life. However, one factor which weakens the case for habitability is its youth—as little as 200 million years old—and consequent high levels of ultraviolet emission (see ''Implied Spaces'' by Walter Jon Williams, below). ==General uses of Epsilon Eridani== Many stars may be referred to in fictional works for their metaphorical or mythological associations, or else as bright points of light in the sky of the Earth, but not as locations in space or the centers of planetary systems. The constellation Eridanus flows north and south in the night sky, and Epsilon Eridani is one of its more northerly stars (see map), which allows it to be seen from most of the Earth's surface. However, because of its unprepossessing appearance in the sky, and its want of a "good" traditional name to supplement its esoteric Bayer designation, Epsilon Eridani has rarely if ever been used in a general sense, either in traditional mythologies or in the arts and literature that draw inspiration from them. The star's popularity as a subject of science fiction stems not from its general cultural resonance, but from the astronomical data: * Its proximity, ~10.5 light-years distant * Its similarity to the Sun, ~0.82 $\backslash beginM\_\backslash odot\backslash end$, spectral type K * Its technical sounding name, in this context a benefit rather than a detriment * Its demonstrated capacity to host a family of planets, with at least one confirmed   ''There follow references to Epsilon Eridani as a location in space or the center of a planetary system, categorized by genre:'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Epsilon Eridani in fiction」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.