Description: 若地球、月球和太陽排成一條直線，且月球位於地球和太陽之間，則會發生日食。從地球表面觀測時，月球圓面覆蓋了天空中的太陽圓面；在太空中觀測時，我們可以看到月球的影子在地球的晝半球上移動。

日食有不同的類型。日全食是指月球圓面完全覆蓋太陽；日偏食是指即使在食甚時，太陽圓面也只有一部分被覆蓋；日環食是指月球與地球的距離比平均值遠，因此看起來比平時小，即使在食甚時也能看到太陽圓面的一圈圓環。

日全食期間，地球上月影最暗處稱為“本影”，月影邊緣稱為“半影”。位於本影內的觀測者看到的是日全食，而位於半影內的觀測者看到的是日偏食。

Related Terms:

• 日蝕
• 月球
• 太陽
• 陰影

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

This is an automated transliteration of the simplified Chinese translation of this term

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