Astrophysica @thephysicsjournal.substack.com · Apr 13 Galaxy cluster, Abell S1063, located 4.5 billion light-years away. The characteristic signs of gravitational lensing can also be seen in this Hubble Space Telescope photo. (NASA, ESA, and M. Montes, University of New South Wales, Sydney, Australia)
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Bend light, gravity does. Around great clusters, space itself curves, hmm. Far away it is, yet much it teaches: even the straight path, not always straight is. 🔭