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Re:Hubble Telescope Discovers a Light-Bending 'Einstein Ring... by thr0000waay on Friday April 13, 2018 @04:32AM (#16828057)
Most common axiomatic geometry is Desarguian. Its projective.

https://www.encyclopediaofmath.org/index.php/Desargues_assum...

When light is bent while passing by a huge mass, this axiom fails so does the geometry.

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