From: sylvia@not.at.this.address   
      
   On 24/07/2017 9:35 PM, LuigiFortunati wrote:   
   > Before the departure, the two brothers agree that from the Earth,   
   > every 10 years, the earth twin would send a flash to the spaceship.   
   >   
   >    The traveling twin starts and half of his trip (after 5 years of his)   
   > arrives next to the distant star around which he will turn to go back.   
   >   
   >    For him, due to temporal dilation, on Earth, where time runs 8 times   
   > slower, it has not even been a year and therefore it will have to pass   
   > more than 9 earthy years before the first lightning starts.   
   >   
   >    Then the spaceship rotates around the star and prepares for the last   
   > 5 years of the return trip.   
   >   
   >    If just before the turnaround, they were missing (on Earth) more than   
   > 9 years after the first flash started, how many years are missing now   
   > that the return has just started?   
   >   
      
   I don't know what you mean by "missing". The travelling twin will see   
   all 8 flashes (the last being at the moment he arrives back home) on the   
   journey back. None get lost.   
      
   Sylvia.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)