https://www.livescience.com/physics-mathematics/gravity/rare-einstein-cross-warps-light-from-one-of-the-universes-brightest-objects-in-this-stunning-image
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8/1/23 at 7:02pm
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Live Science
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Ben Turner
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Einstein predicted the existence of these crosses back in 1915. Now, they are used to study distant galaxies.
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