Sunset Over Western South America (NASA, International Space Station, 04/12/11) [Explored]

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    Sunset over western South America is featured in this image photographed by an Expedition 27 crew member on the International Space Station. Crew members onboard the space station see, on average, sixteen sunrises and sunsets during a 24-hour orbital period. Each changeover between day and night on the ground is marked by the terminator, or line separating the sunlit side of Earth from the side in darkness. While the terminator is conceptualized as a hard boundary -- and is frequently presented as such in graphics and visualizations -- in reality the boundary between light and dark is diffuse due to scattering of light by Earth's atmosphere. This zone of diffuse lighting is experienced as dusk or twilight on the ground -- while the sun is no longer visible, some illumination is still present due to light scattering over the local horizon. The terminator is visible in this photograph trending across the image from lower left to upper right. This panoramic view across central South America, looking towards the northeast, was acquired at approximately 7:37 p.m. local time. Layers of Earth's atmosphere, colored bright white to deep blue, are visible extending across the horizon (or limb). The highest cloud tops have a reddish glow from the direct light of the setting sun while lower clouds are in twilight. The Salar de Coipasa, a large salt lake in Bolivia, is dimly visible on the night side of the terminator. The salar provides a geographic reference point that allows the location and viewing orientation of the image to be determined.

    Image credit: NASA

    Original image:

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    Dan G......, lovedeputat, and 222 other people added this photo to their favorites.

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    1. 36 months ago | reply

      Great shot!

      commented with FlickrComment

    2. Laph95 36 months ago | reply

      Really great.

    3. Estuperidio 36 months ago | reply


    4. Jon Hallworth 36 months ago | reply

      awesome, great shot

    5. europeanasian 36 months ago | reply

      wow, beautiful!

    6. pierluigi maria (ADSL disconnrcted.....sorry) 36 months ago | reply

      One of the most charming shots you have posted.......!

    7. roxyaedoo 36 months ago | reply

      western is always the best side ;)

    8. martinstrud 36 months ago | reply

      I want to go!

    9. "Paul J" 36 months ago | reply


      Seen In Explore!

    10. RayLotier 36 months ago | reply

      Out of this world !

    11. Alexander Steinhof 34 months ago | reply

      Wonderful work, very nice!

      Greetings Alex
      My website:

    12. fstoaldo 24 months ago | reply

      Amazing...speechless. How lucky we are!

    13. Ύψιλον Έψιλον 24 months ago | reply

      absolutely amazing capture :)

    14. el noos 21 months ago | reply

      la noosfera

      fantastic scenery
      love your work

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