Astronomy Picture of Day: Earth at Twilight# Astronomy - 天文
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Earth at Twilight
Credit: ISS Crew, Earth Sciences and Image Analysis Lab, JSC, NASA
Explanation: No sudden, sharp boundary marks the passage of day into night in this gorgeous
view of ocean and clouds over our fair planet Earth. Instead, the shadow line or terminator is
diffuse and shows the gradual transition to darkness we experience as twilight. With the Sun
illuminating the scene from the right, the cloud tops reflect gently reddened sunlight filtered
through the dusty troposphere,
Credit: ISS Crew, Earth Sciences and Image Analysis Lab, JSC, NASA
Explanation: No sudden, sharp boundary marks the passage of day into night in this gorgeous
view of ocean and clouds over our fair planet Earth. Instead, the shadow line or terminator is
diffuse and shows the gradual transition to darkness we experience as twilight. With the Sun
illuminating the scene from the right, the cloud tops reflect gently reddened sunlight filtered
through the dusty troposphere,