# Thread: Question Concerning the Twin Paradox

1. Ok, I just about managed to understand the twin paradox, with the help of these spacetime diagrams: http://www.math.ucr.edu/home/baez/ph...ox/doppler.gif

However, I am confused again. What would happen if the spaceship travelled outwards at a significant fraction of c, but on the way back, travelled at non-relativistic speeds? Would we get the same result? When i tried to work it out, it appeared to me that we would actually get an opposite result, but this seems like nonsense to me.

Any thoughts?

2.

3. Originally Posted by Stuart Thomson
Ok, I just about managed to understand the twin paradox, with the help of these spacetime diagrams: http://www.math.ucr.edu/home/baez/ph...ox/doppler.gif

However, I am confused again. What would happen if the spaceship travelled outwards at a significant fraction of c, but on the way back, travelled at non-relativistic speeds? Would we get the same result? When i tried to work it out, it appeared to me that we would actually get an opposite result, but this seems like nonsense to me.

Any thoughts?
Terence would still be end up younger than Stella, just not by as much.

4. Originally Posted by Janus
Originally Posted by Stuart Thomson
Ok, I just about managed to understand the twin paradox, with the help of these spacetime diagrams: http://www.math.ucr.edu/home/baez/ph...ox/doppler.gif

However, I am confused again. What would happen if the spaceship travelled outwards at a significant fraction of c, but on the way back, travelled at non-relativistic speeds? Would we get the same result? When i tried to work it out, it appeared to me that we would actually get an opposite result, but this seems like nonsense to me.

Any thoughts?
Terence would still be end up younger than Stella, just not by as much.
But Terence ends up older than stella...

Here's where I got the image http://www.math.ucr.edu/home/baez/ph...n_paradox.html. It's in the section titled 'too any analyses'.

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