Earth's city lights

Discussion in 'General Discussion' started by ruffitt, Feb 27, 2003.

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  1. ruffitt

    ruffitt *TFF Admin Staff* In Heaven Now

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    Flhunter
    (9/19/01 8:27:01 pm)
    All Earth's city lights
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    This image of Earth's city lights was created with data from the Defense
    Meteorological Satellite Program (DMSP) Operational Linescan System (OLS). Originally
    designed to view clouds by moonlight, the OLS is also used to map the locations of permanent
    lights on the Earth's surface.
    The brightest areas of the Earth are the most urbanized, but not necessarily the most populated.
    (Compare western Europe with China and India.) Cities tend to grow along coastlines and
    transportation networks. Even without the underlying map, the outlines of many continents
    would still be visible. The United States interstate highway system appears as a lattice
    connecting the brighter dots of city centers. In Russia, the Trans-Siberian railroad is a thin line
    stretching from Moscow through the center of Asia to Vladivostok. The Nile River, from the
    Aswan Dam to the Mediterranean Sea, is another bright thread through an otherwise dark
    region.

    Even more than 100 years after the invention of the electric light, some regions remain thinly
    populated and unlit. Antarctica is entirely dark. The interior jungles of Africa and South
    America are mostly dark, but lights are beginning to appear there. Deserts in Africa, Arabia,
    Australia, Mongolia, and the United States are poorly lit as well (except along the coast), along
    with the boreal forests of Canada and Russia, and the great mountains of the Himalaya.

    (from NASA's Visible Earth Web site: visibleearth.nasa.gov/)


    Guns don't cause crime anymore than flies caues garbage.

    Edited by: Flhunter at: 9/20/01 4:02:04 pm

    warpig883
    (9/20/01 3:04:01 pm)
    Re: Earth's city lights
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    Hey I see my house. I am the one turning the porch light off and on.
    I fear we have awaked a sleeping giant and filled it with a terrible resolve. Jap. Admiral Yamamota directly after Pearl Harbor.

    280freak
    (9/20/01 3:50:16 pm)
    Re: Earth's city lights
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    Cool.

    One question -

    When was this picture taken? Seems to be nighttime everywhere at once.

    LIKTOSHOOT
    (9/20/01 3:57:30 pm)
    Re: Earth's city lights
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    Thats because it was taken at night....................
    America, we are the symbol of Freedom and Liberty......

    280freak
    (9/20/01 4:01:24 pm)
    Re: Earth's city lights
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    All over the world? At the same time? Isn't that one of the "signs"?

    LIKTOSHOOT
    (9/20/01 4:05:16 pm)
    Re: Earth's city lights
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    When your that high, it`s dark everywhere.....that picture was take by the Uranus probe.
    America, we are the symbol of Freedom and Liberty......
     
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