Answer:
I turn everything around but I cannot move. When you see me you see you!
Until I am measured, I am not known. Yet, how you miss me when I have flown. What Am I?
I have a brother. However much we run we do not reach each other.
I never sleep yet sometimes I weep. I can get angry or just be happy. Wherever you go, I will follow. No matter what you do, I will be there. I cannot die. What am I?
You throw me out when you want to use me, but take me in when you donβt want to use me. What am I?
The answer I give is yes, but what I mean is no. What was the question?