By the way, could anybody explain this (IMHO) Relativity paradox?

first of all:
"Ether doesn't exist" =3D TRUE, relativity says. OK.

now, I am in a spaceship, I orbit around the Earth at very high
speed for a certain time, when I'm back home all other people
(which resided on the Earth) look older than I am. Thus time in
my spaceship was slowed, or on the Earth it was quickened.
But relativity says that it could have been the Earth to orbit
very quickly around my spaceship, or my spaceship around it..
as all is relative and NO ETHER (fixed space coordinates) EXISTS!

To me this sounds very contraddictory!

Is there any convincing explanation for that, that doesn't break
neither relativity theory nor asks me to have faith in something?

Cheers,
Mario

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