Celebrim
Legend
Can you move the sphere to a location you cannot see/don't have a line of sight to?
I would think the intention of the spell is "No", but as written I think you can. You would have no information about what the sphere is actually doing, so if it is stuck against a wall or a creature you wouldn't know, but the sphere has no official target and as such isn't limited by targeting rules about line of sight or line of effect.