File:United States at night.jpg

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Summary

DescriptionUnited States at night.jpg	English: This image of the continental United States at night is a composite assembled from data acquired by the Suomi NPP satellite in April and October 2012. The image was made possible by the satellite's "day-night band" of the Visible Infrared Imaging Radiometer Suite (VIIRS), which detects light in a range of wavelengths from green to near-infrared and uses filtering techniques to observe dim signals such as city lights, gas flares, auroras, wildfires and reflected moonlight.
Date	April 18 - October 23, 2012
Source	http://www.nasa.gov/mission_pages/NPP/news/earth-at-night.html Alternative: https://unsplash.com/photos/1lfI7wkGWZ4 NASA
Author	NASA Earth Observatory/NOAA NGDC

	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	10:23, 6 December 2012		6,646 × 4,430 (7.46 MB)	Stas1995	User created page with UploadWizard

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Width	54,000 px
Height	27,000 px
Bits per component	8 8 8
Compression scheme	LZW
Pixel composition	RGB
Orientation	Normal
Number of components	3
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Data arrangement	chunky format
Software used	Adobe Photoshop CS6 (Macintosh)
File change date and time	14:40, 28 November 2012
Color space	sRGB
Date and time of digitizing	14:58, 29 July 2005
Date metadata was last modified	09:40, 28 November 2012
Unique ID of original document	xmp.did:048011740720681188C6CC0A07FF2C97