We're 70 light years from the galactic midplane, and that distance will increase for the next 14 million years.

The Sun (like most of the other stars in the galactic disc) goes around the galaxy in an ellipse, and bobs up and down through the plane of the galaxy as it does so: the net motion is a little like that of one of the horses on an old-fashioned merry-go-round.

Grant Hutchison