From: fortunati.luigi@gmail.com   
      
   Sylvia Else alle ore 18:00:21 del 22/07/2017 ha scritto:   
   >>    Obviously, for the traveling twin, rotations and earth revolutions do   
   >> not appear to be regular.   
   >>   
   >>    As time expands, they take place always more slowly than the   
   >> terrestrial brother.   
   >   
   > Whether the travelling twin is moving away from Earth, or moving towards   
   > Earth, time on Earth passes more slowly in the travelling twin's frame   
   > that does his time (and vice versa, of course).   
   >   
   > However, in the frame of the travelling twin, time on Earth makes an   
   > abrupt jump forwards when the twin reverses direction, whereas in the   
   > frame of Earth, time for the travelling twin makes no such abrupt jump.   
   > The moderator alludes to that below. Not that the travelling twin   
   > observes any such jump through the telescope - all he sees is that the   
   > rotation rate of Earth appears to increase.   
      
     My spaceship rotates around the distant star and goes back without   
   ever detaching the telescope that remains perennially focused on the   
   solar system to receive continuously the images from Earth and the Sun.   
   **   
   **There is no "jump".   
      
   --   
   Luigi Fortunati   
      
   Credere e' piu' facile che pensare   
   Believing is easier than thinking   
      
   [[Mod. note -- I believe the author is mistaken; the Wikipedia article   
   I mentioned earlier in this thread,   
     https://en.wikipedia.org/wiki/Twin_paradox#Relativity_of_simultaneity   
   explains why there is indeed such a "jump".   
   -- jt]]   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)