Twin paradox (split from Hijack from Jumping out of the black hole)

[MJ kihara]

The twin paradox...once they start a conversation about the age of the universe, will they agree on the years?

[Genady]

19 minutes ago, MJ kihara said:

The twin paradox...once they start a conversation about the age of the universe, will they agree on the years?

They will agree on the age of the universe in comoving reference frame.

[MJ kihara]

They are both living in Earth..one goes to a distant star come back her sister has aged let's say 30years older the sister decide to live her younger on Earth and goes to an even far away star and later come back then she find her younger sister even much older than her.... biologically let's say their life span on Earth is 80 years....if they keep doing that will they not be cheating natural laws to prolong their life if finally they dicide to move together to another even further star and stay there.

Shouldn't phyical laws have fiscal physical impact...or otherwise if they are correct shouldn't they have reinterpretation to fit physical impact..which in this case includes biological activities.

[MJ kihara]

Thanks for feynman lectures...

It's also clear to me when people don't understand things they infer to angels..

[Genady]

6 hours ago, MJ kihara said:

will they not be cheating natural laws to prolong their life

No, they will not. Each one will live 80 years in their own time, technically called 'proper time'. If they mind their own business instead of comparing to other people times, they don't experience anything unusual.

[Phi for All]

3 hours ago, MJ kihara said:

It's also clear to me when people don't understand things they infer to angels..

!

Moderator Note

Not here, not in a mainstream science section, so please don't bring them up yourself in this thread.