@mcnees they also point out that "if I've seen further, it's by standing on the shoulders of giants" was likely supposed to be not an acknowledgment, but a sick burn on Hooke (who was short)

@mcnees Gribbon & Gribbon, "Out of the Shadow of a Giant" makes a fascinating case that Newton invented this story to try and override his rival Hooke, who'd had the fundamental conceptual realization earlier but didn't publish it. Great read, though definitely with a bit of a chip on its shoulder.

@mcnees This is why the Russian term for a black hole is "frozen star." Light from the dying star's surface appears to halt as it collapses in towards that limit, and photons reach observers less and less often. (I believe I remember this factoid from Thorne's "Black Holes and Time Warps.")