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Glossary term: 月食

Redirected from 月全食

Description: 當月球進入地球的陰影時，就會發生月食。只有當地球位於太陽和月球之間，並且太陽、地球和月球幾乎排成一列直線時，月食才會發生。因此，月食只能發生在滿月之夜。當月球完全進入地球的陰影之中時，發生的是月全食。當月球僅有一部分被地球陰影遮擋時，發生的是月偏食。月食的類型和持續時間，取決於月食發生時月球在其繞地球公轉軌道上的精確位置。

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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
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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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兩位天文學家正在觀測月食。在多雲的天空中，在他們之間，一連串明亮的圓圈勾勒出一條彎曲的軌跡。

我們之間的日食，作者穆罕默德·雷漢，印度尼西亞

Caption: 2021年國際天文學聯合會教育辦公室天文攝影大賽月全食類別的第二名。 月全食是一種相當壯觀的天文現象，無論是否使用望遠鏡都可以輕鬆觀測到。這裡展示的是2018年1月31日在印度尼西亞拍攝的月全食各個階段：從滿月進入地球圓形本影的開始，到全食階段呈現的“血月”，再到月亮開始離開地球本影直至月落。
Credit: 穆罕默德·雷漢/國際天文學聯合會教育辦公室

License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons


The Moon behind jagged, snowy mountains. The lower two thirds of the Moon are darker and redder than the upper third

The eclipsed Moon sets near the Rochetta di Prendera, Dolomiti Unesco, by Alessandra Masi, Italy

Caption: First place in the 2021 IAU OAE Astrophotography Contest, category Total lunar eclipse. A lunar eclipse occurs when the full moon moves into the Earth`s shadow. This is the case when the Sun, Earth and Moon are exactly or very closely aligned. The reddish light reflected from the lunar surface is caused by sunlight that has been refracted on its way through Earth´s atmosphere in the direction of the Moon. It appears reddish because of the Rayleigh scattering of bluer light. The round shape of the Earth's shadow visible on the lunar surface was a proof for Aristotle that the Earth must be a sphere. This photo shows the eclipsed Moon that sets near the Rochetta di Prendera, Dolomiti Unesco, Italy, on 21 January 2019.
Credit: Alessandra Masi/IAU OAE

License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons

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