[Oberon]

Sadly, far too many people have trouble understanding that our whole Solar System is moving en masse in one direction even as our planets revolve around our Sun (which happens to be centered in the middle of the very System that is moving through space), and thus, they erroneously conclude that the Sun isn't really moving because people on Earth can observe that it "seems" to be always in the same place (not comprehending that it only seems that way because the Earth and the Sun are maintaining their relative positions to each other as they hurtle through space).

All motion is relative. So you say our solar system is moving, and I might agree so far as you've gone... but you haven't specified... it's moving relative to what?

[Southack]

"All motion is relative."

No, the appearance of something moving is relative.

Reality, however, cares not a whit for appearances. Either something is moving or it isn't, regardless of how it appears in your relative frame of reference.