Answer:
I'm a god a planet and a measurer of heat. Who am I?
Until I am measured, I am not known. Yet, how you miss me when I have flown. What Am I?
I am a portal to another world which you cannot enter. Only you can see me but I can't see you.
You shoot me but I don't die. You hang me but I don't die. What am I?
What can you break even if you never touch it?
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.