Free Illustrations / Clip / Art Photos & Images

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Dhammakaya Pagoda
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Water drops macro ladybug
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Landscape tree branches
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Dove Jay Black
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Stethoscope Instrument Business
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Multi Colored Graffiti on Wall
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Beach water ocean
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Ocean Body of water Sea
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Vegetables
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Branches contrast dark evil
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Architecture building buy city
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On my way home
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Resort water reflection sunset
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Bridge Garage Architecture
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Simulation frames from this NASA Goddard neutron star merger animation: <a href="http://bit.ly/1jolBYY" rel="nofollow">bit.ly/1jolBYY</a>  Credit: NASA's Goddard Space Flight Center  This supercomputer simulation shows one of the most violent events in the universe: a pair of neutron stars colliding, merging and forming a black hole. A neutron star is the compressed core left behind when a star born with between eight and 30 times the sun's mass explodes as a supernova. Neutron stars pack about 1.5 times the mass of the sun — equivalent to about half a million Earths — into a ball just 12 miles (20 km) across.  As the simulation begins, we view an unequally matched pair of neutron stars weighing 1.4 and 1.7 solar masses. They are separated by only about 11 miles, slightly less distance than their own diameters. Redder colors show regions of progressively lower density.  As the stars spiral toward each other, intense tides begin to deform them, possibly cracking their crusts. Neutron stars possess incredible density, but their surfaces are comparatively thin, with densities about a million times greater than gold. Their interiors crush matter to a much greater degree densities rise by 100 million times in their centers. To begin to imagine such mind-boggling densities, consider that a cubic centimeter of neutron star matter outweighs Mount Everest.  By 7 milliseconds, tidal forces overwhelm and shatter the lesser star. Its superdense contents erupt into the system and curl a spiral arm of incredibly hot material. At 13 milliseconds, the more massive star has accumulated too much mass to support it against gravity and collapses, and a new black hole is born. The black hole's event horizon — its point of no return — is shown by the gray sphere. While most of the matter from both neutron stars will fall into the black hole, some of the less dense, faster moving matter manages to orbit around it, quickly forming a large and rapidly rotating torus. This torus extends for about 124 miles (200 km) and contains the equivalent of 1/5th the mass of our sun.  Scientists think neutron star mergers like this produce short gamma-ray bursts (GRBs). Short GRBs last less than two seconds yet unleash as much energy as all the stars in our galaxy produce over one year.  The rapidly fading afterglow of these explosions presents a challenge to astronomers. A key element in understanding GRBs is getting instruments on large ground-based telescopes to capture afterglows as soon as possible after the burst. The rapid notification and accurate positions provided by NASA's Swift mission creates a vibrant synergy with ground-based observatories that has led to dramatically improved understanding of GRBs, especially for short bursts.  This video is public domain and can be downloaded at: <a href="http://svs.gsfc.nasa.gov/vis/a010000/a011500/a011530/index.html" rel="nofollow">svs.gsfc.nasa.gov/vis/a010000/a011500/a011530/index.html</a>  <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/NASAGoddardPix" 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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Alm alpe alpine meadows austria
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City Urban Architecture
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Plants leaves blurry
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Plate Food Dish
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Sky Clouds Landscape
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City cityscape sea skyline
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Herb Dandelion Flower
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Architecture Sky Building
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Train Station Track
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Green and White Petaled Flowering Plant
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Flower Sunflower Yellow
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Craftswoman holding blow torch in workshop
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Attentive craftswoman working in workshop
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Hands of craftswoman using pliers in workshop
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Close-up of craftswoman working in workshop
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Close-up of craftswoman working in workshop
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Attentive craftswoman working in workshop
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Close-up of craftswoman working in workshop
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Close-up of woman matching color with color swatch at table
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Close-up of woman shading in drawing book at table
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Close-up of craftswoman working in workshop
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Hands of craftswoman using scissors in workshop
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Close-up of craftswoman using pliers in workshop
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Man assisting woman in painting during drawing class
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Attentive woman painting on canvas in drawing class
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Close-up of craftswoman working in workshop
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Close-up of craftswoman working in workshop
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Craftswoman lighting blow torch in workshop
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Close-up of craftswoman working in workshop
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Close-up of craftswoman working in workshop
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Attentive woman painting on canvas in drawing class
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Man assisting woman in painting during drawing class
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Man assisting woman in molding clay during drawing class
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Attentive woman painting on canvas in drawing class
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Close-up of craftswoman using blow torch in workshop
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Close-up of craftswoman working in workshop
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Close-up of craftswoman working in workshop
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Mid-section of craftswoman working in workshop
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Attentive craftswoman working in workshop
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Craftswoman using blow torch in workshop
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Close-up of craftswoman using blow torch in workshop
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Close-up of craftswoman using blow torch in workshop
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Portrait of smiling children with face paint sitting by food and drinks at park
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Thoughtful woman looking at her painting in class
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Beautiful woman molding clay in drawing class
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Portrait of happy woman holding palette and paintbrush
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Woman shading a sketch in canvas at drawing class
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Beautiful woman using digital tablet at table
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Male and female potter painting pots in pottery workshop
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Portrait of confident man standing with arms crossed in class
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Overhead view of eyeglasses and mustache on wooden table
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Attentive woman painting on canvas in drawing class
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Close-up of frit glass in plastic container at glassblowing factory
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Hands of craftswoman working on a machine in workshop
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Close-up of craftswoman working in workshop
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Close-up of craftswoman working in workshop
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Close-up of craftswoman working in workshop
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Mid-section of craftswoman using hammer in workshop
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Craftswoman using blow torch in workshop
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Close-up of craftswoman working in workshop
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Smiling woman painting on canvas in drawing class
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Blank canvas in lawn
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Overhead of woman knitting wool in porch
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Close-up of craftswoman working in workshop
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Hands of craftswoman using blow torch in workshop
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Close-up of craftswoman working in workshop
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Close-up of woman holding charcoal pencil at table
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Craftswoman holding blow torch in workshop
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Happy woman painting on canvas in drawing class
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Attentive woman sketching in drawing book at table
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