Glossary term: 木卫一，音译为艾奥
Description: 木卫一是围绕木星运行的一颗卫星，由伽利略·伽利莱于1610年发现。它是木星四颗最大的卫星中距离木星最近的一个。木卫一每42.5小时绕木星运行一周，距离木星约422,000公里。由于在绕木星运行时受到强烈的潮汐力作用，木卫一表面有许多活跃的火山。
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
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木卫影片2，Nicolas Hurez，Paul-Antoine Matrangolo，和Carl Pennypacker，美国
Credit: Nicolas Hurez，Paul-Antoine Matrangolo 和 Carl Pennypacker/IAU OAE
License: CC-BY-4.0 Creative Commons 署名 4.0 国际 (CC BY 4.0) icons
木星、木卫一及其阴影，作者：Ralf Burkart，德国
Credit: Ralf Burkart/IAU OAE
License: CC-BY-4.0 Creative Commons 署名 4.0 国际 (CC BY 4.0) icons
木卫一（伊奥）
Credit: 美国宇航局/JPL/亚利桑那大学 credit link
License: PD Public Domain icons
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