Jisho

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局所恒星間雲
Wikipedia definition
1. Local Interstellar CloudThe Local Interstellar Cloud (or Local Fluff) is the interstellar cloud roughly 30 light years or 9.2 Parsecs across through which the Earth's solar system is currently moving. The Solar System is thought to have entered the Local Interstellar Cloud at some time between 44,000 and 150,000 years ago and is expected to remain within it for another 10,000 to 20,000 years. The cloud has a temperature of about 6000 °C, about the same temperature as the surface of the Sun.
Read “Local Interstellar Cloud” on English Wikipedia
Read “局所恒星間雲” on Japanese Wikipedia
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