When light from a star passes near a galaxy, for example, its path bends, changing where the star appears in the sky-the so-called gravitational lensing effect.
例如，当恒星发出的光经过一个星系附近，其路径会弯曲，改变恒星出现在天空中的位置——这就是所谓的引力透镜效应。
As the sun passed overhead then sank into the west it burned a bright path across the middle of the sky in this long-exposure image.
在这张长曝光片中，太阳划过头顶，渐渐西下，划出明亮的光带。
The moon has a regular path through the sky.
月亮在天空中有一定的轨道。
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