| Abstract from DBPedia | Airglow (also called nightglow) is a faint emission of light by a planetary atmosphere. In the case of Earth's atmosphere, this optical phenomenon causes the night sky never to be completely dark, even after the effects of starlight and diffused sunlight from the far side are removed. This phenomenon originates with self-illuminated gases and it has no relationship with Earth's magnetism and sun spot activity.大気光（たいきこう）とは、大気光学現象の一種で、地球などの惑星の大気が起こす弱い発光。英語では "airglow"と言い、通常夜間に観測されるので "nightglow" とも言う。大気光があるため、星明かりや太陽光の散乱が無かったとしても夜空は完全な暗黒にはならない。 (Source: http://dbpedia.org/resource/Airglow) |
