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### What if two twins flew off in opposite directions and were reunited in a perfectly symmetric way, would they have aged same? [duplicate]

If No, well this can't be, as there is perfect symmetry, you can't tell one from the other. If Yes, they had relative velocities all along, then their times must have dilated and somehow they must ...
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### Time dilation and twin paradox - can this be explained in plain English? [duplicate]

If one twin goes with an extremely fast rocket to Alpha Centauri and back, time is going slower for him, so when he comes back, the twin that stayed on the Earth is older. But... if we look from the ...
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### How do you solve the twins Paradox? [duplicate]

I'm a beginner physics student only studying elementary AP-level physics and calculus, so when I came across the conceptual basis of the twins paradox I was, of course curious. People often explain ...
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### Twin paradox - confusions in explanation [duplicate]

I know the following question is sure to cause howls of anguish. I can only apologize for the length at which I have had to write in order to be precise, and I do hope people will bear with me for a ...
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### Twin's clock slowing down [duplicate]

This question is not same as explaining Twin paradox. This question does expect that the travelling twin will age less. The question in here is what causes the travelling clock to slow down, which is ...
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### 3 variations of the Twin Paradox [duplicate]

Here I state and try to answer three variations of the twin paradox 1) "Classical" problem, no acceleration, no turn around Consider the case where there's a stationary planet, and a moving ...
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### Doesn't the slowing of time when travelling at almost light speed create a paradox with an observer? [duplicate]

Disclaimer: I am extremely new to this and have no proper knowledge of this subject at all, this is just an idea that I had which I want to properly understand. I don't have any knowledge of necessary ...
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### How can a twin travelling astronaut paradox be resolved? [duplicate]

This is a variant of the twin paradox. But having each of the twin astronauts take off in opposite directions and returning to meet such that all aspects of acceleration and velocity are the same. ...
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### How to differentiate permanent age difference in the twin paradox from reciprocal time dilation? [duplicate]

I'm hereby editing my previous question about the cause of permanent age difference in the twin paradox example as a result of the links I've been given as answers to my original question. I am trying ...
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### (Misunderstood) special relativity and equivalence of motion [duplicate]

Let $A$ be the person who is standing on the Earth (ignoring gravitational field, etc.). Let $B$ be the person who is moving to the Proxima Centaura and back. By the time dilation equation we get: ...
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### A question on twin paradox [duplicate]

Let there be two children Allen and George . now Alan boards a train and the train moves at a speed comparable to light. now because George is on the station for George being at rest Allen is moving ...
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### Three Questions On Special Relativity [duplicate]

Twins Paradox Using the simplified version of the paradox, where acceleration to near light speed and the turning of the spaceship are almost instantaneous, the paradox is completely symmetrical - in ...
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### Twin paradox and special relativity [duplicate]

A young-looking astronaut has just returned home after a long trip in outer space. He found an old lady in his house and the old lady introduced herself as his daughter. How could this be possible?