*Thanks for your time and effort, but I don't think you understand my* *question. Suppose a test particle is restrained spatially, say in * *the Sun's gravitational field. When released, it starts to move (toward * *the Sun). How does GR explain this motion? By the advance of time? AG* -- 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 everything-list+unsubscr...@googlegroups.com. To post to this group, send email to firstname.lastname@example.org. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.