These graceful arcs are a cosmic phenomenon known as an Einstein ring - created as the light from distant galaxies warps around an extremely large mass, like a galaxy cluster. via NASA https://ift.tt/2JrIFMa
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Lunar Occultation of Venus
On Wednesday, June 17, skywatchers across the United States—and parts of Canada—enjoyed a rare event: a daytime lunar occultation of Venus. ...
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An astronaut aboard the International Space Station took this oblique photograph of the Sulaiman Mountains in central Pakistan. The range r...
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Astronaut Bruce McCandless II approaches his maximum distance from the Earth-orbiting Space Shuttle Challenger in this 70mm frame photograp...
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NASA opened its newest wind tunnel, the Flight Dynamics Research Facility at NASA’s Langley Research Center in Hampton, Virginia, on Friday,...
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