Precisely. 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).
"Sadly", the problem with your lame troll is that you're beating a red herring.
Aruanan's argument (and Van Flandern's, which is where Aruanan seems to have gotten his from) is not based on the motion of the Solar System as a whole, period. So your repeated flogging of that irrelevant issue in an attempt to muddy the issue is moot.
His argument rests solely on the motion of the Earth around the Sun, and would be equally valid or invalid whether the Solar System were cruising through the universe at near light speed, or nailed completely stationary to a cosmic anchor.
You're trolling with a red herring, and you most likely know that.
So I repeat -- stop trolling, you're not fooling anyone. FreeRepublic's administrators don't take kindly to trolls.
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?