I'm not sure that it was clear that this vid has two parts, towards the end of the first part a link to the second part pops up so you have to click that.
I don't really have a problem with the first part but the second part seems more controversial to me because, although it does not come out and say it, it does suggest that our solar system is bound to some other object.
In other words, not only is our solar system orbiting the galactic core but it is also orbiting some other object.
I've understood (whether right or wrong) that our solar system occasionally pops out of the top first then the bottom of our galaxy.
In 2 dimensions it would look like an analog wave but what would cause this kind of movement?