銀河系外惑星
1. Extragalactic planetAn extragalactic planet is a planet that is outside the Milky Way Galaxy. Other terms used to describe these are extragalactic extrasolar planet and extragalactic exoplanet.
Read “Extragalactic planet” on English Wikipedia
Read “銀河系外惑星” on Japanese Wikipedia
Read “Extragalactic planet” on DBpedia
Read “Extragalactic planet” on English Wikipedia
Read “銀河系外惑星” on Japanese Wikipedia
Read “Extragalactic planet” on DBpedia
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