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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

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".

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Caption: Second place in the 2021 IAU OAE Astrophotography Contest, category Galilean moons. This sequence shows the orbit of the four Galilean moons around the planet Jupiter. Almost two entire orbits of the innermost moon, Io, can be seen, with the other moons (Europa and Ganymede, but in particular Callisto) being further away, orbiting noticeably slower. The images were obtained in 2018 with the Las Cumbres Global Observatory at different locations on Earth, allowing a continuous sequence of images over approximately half a week without gaps during the day. With clear skies and over the course of several nights, the motion of the Galilean moons can also be observed with binoculars (ideally steady your elbows on a surface).
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License: CC-BY-4.0 Creative Commons 署名 4.0 国际 (CC BY 4.0) icons


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License: CC-BY-4.0 Creative Commons 署名 4.0 国际 (CC BY 4.0) icons


木卫一大致呈球形。它的表面主要由淡黄色的硫化物和较小的暗色火山组成。

伊奥卫星

Caption: 美国国家航空航天局的伽利略号航天器于1999年7月3日获得了木星卫星木卫一的最高分辨率图像。木卫一是伽利略-伽利雷 1610 年发现的四颗卫星之一。木卫一的颜色源于硫化物,是大量火山活动存在的证据。木星和邻近卫星的潮汐力是木卫一火山活动的原因。
Credit: 美国宇航局/JPL/亚利桑那大学 credit link

License: PD Public Domain icons

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Children's Planetary Maps: Io

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License: CC-BY-4.0 Creative Commons 署名 4.0 国际 (CC BY 4.0) icons

Tags: Maps , Planetary cartography , Spatial thinking
Age Ranges: 6-8 , 8-10 , 10-12 , 12-14
Education Level: Middle School , Primary , Secondary
Areas of Learning: Social Research
Costs: Low Cost
Duration: 2 hours
Group Size: Group
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