If not a laser or radio signal, then how? You gave me 2 links above and neither one of them tells us how they measured the distance from the earth to the sun. You need at least 2 values to complete the equation. Point A to B would be 1 value. You don't have to be an "expert" in a white lab coat to figure that out. Without proof, or a way to even measure it for ourselves, all you have is a theory.

It is not "pointless" to question everything.