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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Atmosphere Sky Clouds
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Digital composite of Multiple image of confident businesswoman carrying briefcase
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Digitally generated image of folder icons against red background
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Digitally generated image of folder icons on green background
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Background Fruits
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Digital composite of women on tablet with grey texture background
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Digital composite image of empty file folders against turquoise background
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Digital composite of Young girl with glasses and books against painted background
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Digitally generated image of computer folder icons against blue background
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Digital composite of Multiple image of shopaholic woman against white background
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Digital composite of Multiple image of shopaholic woman over white background
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Digital composite of Woman at computer with chart graphic overlay against blue background
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Digital composite image of file folder with chain locked against green background
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Digital composition of businessman with briefcase running on stack of coins against cityscape in background
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Digital composite of Surprised man looking at blank billboard while standing against pink background
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Digital composite of Angry businessman screaming with fire in background
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Digital composite of Businesswoman holding mobile phone over beige background
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Digital composition of mobile apps icons against black background
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digital composite of Wooden boards with pool water background
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Digital composite of Confident businesswoman gesturing over beige background
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Digital composite of Happy businessman gesturing over colored background
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Digital composite of Business woman with tablet. Wood background
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Digital composite of Confident businessman gesturing over blue background
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Digital composite of Android Robot hand thumbs up with grey background
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Digital composite of service man thinking collection
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Digital composite of Android Robot hand holding planet earth with blue background
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Digital composite of businessman holding cloud with blue background
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Digital composite of Hand holding tablet against minimal bright background
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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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Digital composite image of solar panels against white background
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Digitally generated image of folder icon with upload and download arrows against blue background
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Sand and coins in hourglass  against world map on grey background
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Digitally generated image of folder icons connected to gears against blue background
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Green grass field background, full frame
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Close-up of modern brick wall background, full frame
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Cobble stone road background, full frame
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Digital composite of cook with blurred background
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Cobble stone road background, full frame
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Paving stone road background, full frame

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

You can’t find the proper HD background for your wallpaper, website, brochure, presentation, or other commercial project? PikWizard is here to bring you everything you need – a vibrant library of amazing background HD wallpapers, images, and stock photos. Not only have we hand-picked the best ones for you inside our premium gallery, but for you, they’re 100% free. Find the one you like the most and download it, share it, or edit it right now with DesignWizard!

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