A Complete Collection of 100000 Whys
Fav十万个为什么
为什么天空会变暗？
1、地球自转导致夜晚降临，太阳光无法照射到地球的某些区域，因此天空会变暗。
2、大气层的散射作用会使天空呈现蓝色，但在夜晚，没有太阳光散射，天空自然会变暗。
3、城市灯光和污染会减少夜空中的可见星光，使天空看起来更加昏暗。
4、季节变化和地理位置会影响夜空的亮度，例如冬季或高纬度地区夜晚更暗。
5、天文现象如月食或日食也会暂时遮挡太阳或月亮，导致天空变暗。
总之，天空变暗是由于地球的自转、大气层的散射、人造光源、季节和地理位置以及天文现象的共同作用。
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