Neptune
noun
The ocean king's star is Neptune! If you know anything about Roman mythology this should be easy to remember!
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
海王星は色が青いです。
The color of Neptune is blue.
海王星には日の光があまり行きません。
Not much sun light reaches Neptune.
海王星は1846年9月23日に見つかりました。
Neptune was found on September 23, 1846.