In a thread that was just open and almost immediately closed: https://www.physicsforums.com/showthread.php?t=546278 there was a link to a possible crackpot site, but one part of the discussion said simply that the sun (the whole solar system) moves through space. A graphic demonstrating this showed (incorrectly I suspect) the sun moving perpendicular to the plane of the ecliptic and the planets therefore having a helical motion through space. As I said, I suspect the actual motion is at an angle to that plane, so the motion is more complex than the graphic. BUT ... I contend that the fundamental concept is perfectly valid. Have I got something wrong there somewhere? EDIT: I was going to PM the mentor who closed the other thread to ask that he/she take a look at this one, but there's no indication as to who closed the thread (or WHY for that matter, though I assume they just took a quick look and concluded that the linked site was a crackpot site, which it might have been).