> But relativity says that it could have been the Earth to orbit
> very quickly around my spaceship, or my spaceship around it

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

As I see it -

If it were true then we, in fact everything, would be as ageless as
photons (in time as we know it so far)

The Earth around which you are orbiting is stationary with respect
to spacetime
--=20
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