Not just bouyancy but friction. An off-center mass moving through anything but vacuum is a dart with fins. Or is bouyancy just used as a shorthand term for the

Not just bouyancy but friction. An off-center mass moving through anything but vacuum is a dart with fins. Or is bouyancy just used as a shorthand term for the effect of fins? Because literal bouyancy would also be a thing here. But the literal bouyancy points away from the center of the Earth while the friction points away from the direction of travel.