andromeda1023:not-so-random-thoughts:Gravitational lensing works because – as Albert Einstein explai
andromeda1023:not-so-random-thoughts:Gravitational lensing works because – as Albert Einstein explained in his theory of general relativity – mass bends light. The gravitational field of a distant galaxy or galaxy cluster causes light to bend around it. From Earth, we see the light as displaced from where it would otherwise be. Image via NASA/ ESA/ L. Calçada/ SpaceTelescope.org.(via TumbleOn) -- source link
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