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Einstein's General Theory of Relativity demonstrates that a large mass can deform spacetime and bend the path of light. So, a very massive object, such as a cluster of galaxies can act as a gravitational lens. When light passes through the...

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7art Space screensaver brings you 22 pictures with incredible cosmic views. The Space images (true color, 800x600 resolution) take turns with various original transitional effects that make your PC's screen stunning look. The 7art Space...

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This screensaver contains 32 photos of different objects in the Universe made mainly by Hubble telescope. You can see the formation of new stars and relict light of ancient stars, "blackholes" and "supernova" stars, also nebulas, constellations...