DreamTeamDownloads1, FTP Help, Movies, Bollywood, Applications, etc. & Mature Sex Forum, Rapidshare, Filefactory, Freakshare, Rapidgator, Turbobit, & More MULTI Filehosts - New Spectacular Photos of The Earth by Night

BBC World, 6 December 2012

In Pictures: Planet Earth by Night Released by Nasa

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Scientists at Nasa have released a number of new images of planet Earth at night.
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.The global composite images were constructed using cloud-free night images from a new Nasa and National Oceanic and Atmospheric Administration (NOAA) satellite.

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According to Nasa, the images show the light generated by natural and human-built phenomena across the planet in greater detail than ever before.

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The images were acquired by the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi NPP satellite. It has a new sensor that can detect the nocturnal glow produced by Earth's atmosphere and the light from a single ship in the sea.

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Here is part of the Atlantic coast of South America on the night of 20 June 2012.

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The VIIRS "day-night band" detects light in a range of wavelengths from green to near-infrared and uses filtering techniques to observe signals such as gas flares, auroras, wildfires, city lights, and reflected moonlight.

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“The instrument can capture images on nights with or without moonlight, producing crisp views of Earth's atmosphere, land and ocean surfaces,” says Steve Miller, a researcher at NOAA's Colorado State University Cooperative Institute for Research in the Atmosphere.

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"For all the reasons that we need to see Earth during the day, we also need to see Earth at night," says Mr Miller. "Unlike humans, the Earth never sleeps."

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On 13 October 2012 the satellite captured this night-time view. "The Nile River Valley and Delta comprise less than 5% of Egypt’s land area, but provide a home to roughly 97% of the country’s population. Nothing makes the location of human population clearer than the lights illuminating the valley and delta at night," says Nasa.

Incredible! :clapper: