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Background HD

Hundreds of background HD images available for download in the PikWizard gallery. You can browse our collection of HD background pictures and wallpapers. From nature scenery to business and office environments, we’ve got everything you need to find the perfect background HD stock photos for your commercial or non-commercial project. We’ve brought together this huge variety of premium-quality backgrounds and HD wallpapers inside PikWizard to bring you the number one library of free background HD images! No attribution required for commercial use.

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Wool Texture Fabric
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Clouds violet plane airplane
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Leaf Drop Tree
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Plane Fling on Sky Leaving Contrailss
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Jellyfish Invertebrate Animal
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Close Up Photography Green Grass during Daytime
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Back light beautiful flowers blue gray
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Autumn beautiful beauty bloom
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Purple flowers on field
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Background Fruits
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New background
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Landscape lake hd wallpaper
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The night side of Earth twinkles with light, and the first thing to stand out is the cities. “Nothing tells us more about the spread of humans across the Earth than city lights,” asserts Chris Elvidge, a NOAA scientist who has studied them for 20 years.  This new global view and animation of Earth’s city lights is a composite assembled from data acquired by the Suomi National Polar-orbiting Partnership (Suomi NPP) satellite. The data was acquired over nine days in April 2012 and thirteen days in October 2012. It took satellite 312 orbits and 2.5 terabytes of data to get a clear shot of every parcel of Earth’s land surface and islands. This new data was then mapped over existing Blue Marble imagery of Earth to provide a realistic view of the planet.  The nighttime view in visible light was made possible by the new “day-night band” of Suomi NPP’s Visible Infrared Imaging Radiometer Suite. VIIRS detects light in a range of wavelengths from green to near-infrared and uses filtering techniques to observe dim signals such as city lights, auroras, wildfires, and reflected moonlight. This low-light sensor can distinguish night lights with ten to hundreds of times better light detection capability than scientists had before.  Named for satellite meteorology pioneer Verner Suomi, NPP flies over any given point on Earth&amp;rsquos surface twice each day at roughly 1:30 a.m. and 1:30 p.m. The polar-orbiting satellite flies 824 kilometers (512 miles) above the surface as it circles the planet 14 times a day. Data is sent once per orbit to a ground station in Svalbard, Norway, and continuously to local direct broadcast users around the world. The mission is managed by NASA with operational support from NOAA and its Joint Polar Satellite System, which manages the satellite's ground system.  NASA Earth Observatory image and animation by Robert Simmon, using Suomi NPP VIIRS data provided courtesy of Chris Elvidge (NOAA National Geophysical Data Center). Suomi NPP is the result of a partnership between NASA, NOAA, and the Department of Defense. Caption by Mike Carlowicz.  Instrument: Suomi NPP - VIIRS   Credit: <b><a href="http://www.earthobservatory.nasa.gov/" rel="nofollow"> NASA Earth Observatory</a></b>  <b>Click here to view all of the <a href="http://earthobservatory.nasa.gov/Features/NightLights/" rel="nofollow"> Earth at Night 2012 images </a></b>  <b>Click here to <a href="http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=79803" rel="nofollow"> read more </a> about this image </b>   <b><a href="http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html" rel="nofollow">NASA image use policy.</a></b>  <b><a href="http://www.nasa.gov/centers/goddard/home/index.html" rel="nofollow">NASA Goddard Space Flight Center</a></b> enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.  <b>Follow us on <a href="http://twitter.com/NASA_GoddardPix" rel="nofollow">Twitter</a></b>  <b>Like us on <a href="http://www.facebook.com/pages/Greenbelt-MD/NASA-Goddard/395013845897?ref=tsd" rel="nofollow">Facebook</a></b>  <b>Find us on <a href="http://instagram.com/nasagoddard?vm=grid" rel="nofollow">Instagram</a></b>
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Beach dawn dusk hd wallpaper
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Cold dark exploration hd wallpaper
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Clouds dawn dusk hd wallpaper
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Landscape mountains lake hd wallpaper
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Beach coast hd wallpaper island
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Sunset beach summer hd wallpaper
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Beach dawn dusk hd wallpaper
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Landscape sky clouds hd wallpaper
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Cobble stone road background, full frame
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Pink Petaled Flower in Hd Photo
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Background blurred background
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Away background background image clouds
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Textile Background
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Autumn fall fall background fall leaves background
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Autumn background background image copy space
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Close-up green leaves, background
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View of bridge over lake, background
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View of beautiful green forest, background
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Close-up of green plants, background
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Reflection of trees and bridge in lake, background
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Atmosphere background coconut deco
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Abc abstract alphabet background
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Abstract background circle food
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Background bloom blossom bright
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Abc abstract alphabet background
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Background bay beach beautiful
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Background blue boat color
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Background beach beautiful bright
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Air atmosphere background blue
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Abstract architectural architecture background
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Assistance background cancer cigarette
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Architecture background contemporary curved
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Asia background calendar flower

Background HD Wallpapers for Desktop, Android, or iPhone - Download, Share, or Edit for free.

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