Though this is really a tug rather than propellant transfer: https://www.space.com/private-satellites-docking-success-northrop-grumman-mev-1.html https://www.s

Though this is really a tug rather than propellant transfer: https://www.space.com/private-satellites-docking-success-northrop-grumman-mev-1.html https://www.space.com/private-satellites-docking-success-nor... But not so sci-fi.