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Here's A Nine-Billion-Year Old Gravitational Lens In Space - Universe Today
Here’s a picture of what deflected light looks like from 9.4 billion years away. This is the most faraway “gravitational lens” that we know of, and a demonstration of how a galaxy can bend the light of an object behind it. The phenomenon was first predicted by Einstein, and is a handy way of measuring … Continue reading "Here’s A Nine-Billion-Year Old Gravitational Lens In Space"