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Apr 23, 2022 at 22:58 comment added Robbie Goodwin How did you come to use "… insensitive to the value of (anything)…"?
Apr 19, 2022 at 21:00 history tweeted twitter.com/StackAstronomy/status/1516522029654188044
Apr 19, 2022 at 17:25 history became hot network question
Apr 19, 2022 at 11:59 comment added PM 2Ring Divergent reflections around the photon sphere of a black hole has plots & equations for black hole photon trajectories, both Schwarzschild and Kerr.
Apr 19, 2022 at 11:52 vote accept Richard
Apr 19, 2022 at 10:26 answer added ProfRob timeline score: 17
Apr 19, 2022 at 9:25 history asked Richard CC BY-SA 4.0