From: sylvia@email.invalid   
      
   On 15-Mar-22 6:08 am, Luigi Fortunati wrote:   
   > The traveling twin starts and travels for 4 years at speed v = 0.866c   
   > and then brakes, as seen in the animation   
   > https://www.geogebra.org/m/jzc4amud   
   >   
   > Calculate the Earth-spaceship distance, before and after braking (in   
   > the spaceship reference).   
   >   
   > Calculate how many turns the Earth has made around the sun, before and   
   > after braking (in the spaceship reference).   
      
   Are they identical, mirror, or fraternal twins. If identical, are they   
   conjoined? How would the experiment go for the latter case?   
      
   Sylvia.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)