On Sat, Jun 6, 2020 at 9:43 AM Alan Grayson <[email protected]> wrote:
> *Kepler deduced from measurements that Mars has an elliptical orbit, > whereas Newton's law of gravitation implies much more; namely, that they > can move in conic sections.* If gravity is an inverse square law that follows Newton's rules and if there are only 2 massive objects in the universe then you can prove mathematically their orbit will follow a path that is a conic section. But even if you lived in a universe where Newton was 100% right and Einstein was wrong, Mars would not have an elliptical orbit or that of any conic section because there are more than 2 massive objects in the universe. And of course we know now that gravity does not follow Newton's rules. John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAJPayv1YprdqGygPCMdMOVau6t4emx9O9Zsij6iA5oXjSRd5mw%40mail.gmail.com.
