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wood prints terminator wood prints planet wood prints earth wood prints twilight wood prints ocean wood prints cloud wood prints international space station wood prints iss wood prints troposphere wood prints dusk wood prints planetary wood prints atmosphere wood prints space station image wood prints aerial wood prints astronomy wood prints

photographs terminator photos planet photos earth photos twilight photos ocean photos cloud photos international space station photos iss photos troposphere photos dusk photos planetary photos atmosphere photos space station image photos aerial photos astronomy photos

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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, the lowest layer of the planet's nurturing atmosphere. A clear high altitude layer, visible along the dayside's upper edge, scatters blue sunlight and fades into the blackness of space. This picture actually is a single digital photograph taken in June 2001 from the International Space Station orbiting at an altitude of 211 nautical miles.