Answer:
I regularly change shape yet remain a sphere. I am always there but not often seen. What am I?
What has four wheels and flies?
Never ahead, ever behind, yet flying swiftly past, for a child, I last forever, for adults, I'm gone too fast.
I can point in every direction but can't reach the destination by myself. What am I?
I am found on Mercury Venus Earth and Mars but not on Jupiter or Saturn. What am I?
The answer I give is yes, but what I mean is no. What was the question?