: I thought it was impossible to use any chrono
: with an auto movement in outerspace.

: Fundamental of the winding mechanism is gravity
: with zero g would it not be impossible for
: it to wind itself??

There is a mistaken perception that a rotor won't work outside of a major gravitational field (in zero or near-zero gravity). But, a rotor operates on inertia, not gravity, and as a result a rotor does work in such environments and will wind themselves.

-- Chuck