We are using a Morris-Throne Wormhole Metric. Let's presume the throat of this wormhole exists but(in internal hyperspace) is short, let's say 1km.
Now, as you are travelling through the entrance wormhole, your speed is ~0 relative to the movement of the galaxy, however, you are moving through the throat onto a piece of mass (Earth) travelling at 107,000km/h relative to the local galaxy. There would also be a sudden increase in galaxy-relative rotation (empty space with 0 rotation -> Earth with 460m/s). How would this transition occur? My current guess is an increase of local speed relative to the galaxy occurs during the movement throughout the throat.
Apologies if this question is hard to answer, but it only occured to me recently that this "transition" between empty space (space moving at no speed relative to the galaxy) and curved spaces (space with great local mass such as on a planet that is moving relative to the galaxy) is the reason why wormholes must be maintained many AU away from the centre of a system. In my world, wormholes are positioned in positions around their local star so that their velocity and rotation is equivalent to the other mouth. (1 wormhole 5 au around the star at 500,000km/h, another wormhole 8 au around a larger star at 500,000km/h)
Post Closed as "Needs details or clarity" by elemtilas, Escaped dental patient., Adrian Colomitchi, ltmauve, sphennings