Originally Posted by eintonnewstein

Is the main space craft moving when the little space craft goes out or is it still(not moving)...if it's moving how can a small space craft which obviously needs to change direction go back and fix a part of the main space craft and then get back in the main space craft ...i mean it needs to accelerate right? but it doesnt have enough fuel and it isnt capable of having the same speed as the main spacecraft...or the opposite does the main space craft slows down so that the small one could catch up...