John Batchelor has a hobby which is astronomy and almost always devotes a small segment of his show to developments in space exploration.
Last nights guest discussed our solar system and mentioned that it as circumnavigates in its arm position location.
Our solar system is moving faster than the arm. Which suggests (his guest did not offer this) our solar system moves from one arm of the spiral to another as it moves in its allocated space depicted in those artists conceptions.
Did he also mention that our Solar System moves ‘up’ and ‘down’ in the arm, relative to the central plane?........................