Above note a picture of gravitational lensing in action, as the light from several distant galaxies is bent by the presence of massive amounts of matter between us and them.
As this article from Astronomy notes, the warped space-time presents excellent proof that Albert Einstein's Theory of General Relativity is correct, since it claims matter causes such warping. The Cheshire Cat appearance of the combination of galaxies seems rather appropriate, as Einstein carried more than a bit of Mad Hatter about him and his theories have led to some very deep rabbit-holes indeed.
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