Galaxy Wallpaper HD

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Star Atmosphere Sky
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Cosmos field dwarf galaxy space
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Andromeda celestial cosmos dust
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Scenic View of Star Field Against Sky at Night
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Galaxy stars night
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Clouds collisions cosmic cosmos
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Astronomy constellation cosmos dust
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Bright cosmos diffuse galaxy
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Stars sky night
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Silhouette man person stars
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Stars sky galaxy
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Milky Way Galaxy
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Andromeda galaxy cosmos dust m31
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Stars galaxy space
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Texture Pattern Wallpaper
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Digital composite of Judge with balance scale in front of 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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Northern lights aurora aurora borealis night
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Low Angle View of Moon Against Sky at Night
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Blurry lights raining
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Milky Way
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Star Celestial body Space
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Star Celestial body Space
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Moon planet space
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Astronomy constellation dark nature
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3d africa atlas black
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Digital composite of rocket ship in space
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Low Angle View of Full Moon at Night
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Dark full moon halloween moon
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Astronomy bright cosmos fullmoon
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Ellipse Planet Satellite
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Photo of Moon
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Digital composite of Digital composite image of businesswoman with speech bubbles
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Digitally generated image of folder icon with upload and download arrows against blue background
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Digital composition of file upload and download icon against blue background
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Composite image of hand holding light bulb with black background
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composite of hand pointing at padlock graphic
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composite of hand holding globe graphics
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Silhouette of male athlete playing football at dusk
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Digitally generated image of folder icon with colorful gears against blue background
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Digital composite image of rugby ball forming 2017 against blue background
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Digital composition of happy female doctor standing against blue background
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Locked folder icons against white background
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Digitally generated christmas greeting card with wishes
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Digital composition of cheerful male automobile mechanic with wrench and car shape on background
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Thoughtful american football player standing against blue background
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Digital composite of Smiling businesswoman with arms crossed against blue background
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Digital composite of Side view of businessman using laptop with blank screen
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Digital composite of Midsection of businessman holding laptop
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Silhouette of player catching a rugby ball against green background
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