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天王星[kái goân-sí-bé]
天王星 (Uranus)是日頭算過來第七粒惑星，伊嘛是一粒氣體大惑星 (gas giant)，直徑第三長，質量 (mass)第四大，星相符號是 ♅，天文符號是⛢。
外部連結[kái goân-sí-bé]
- NASA's Uranus fact sheet
- Keck pictures of Uranus show best view from the ground -- Press release with some photographs showing rings, satellites and clouds