Answer:
I stay where I am when I go off. What am I?
Light hides me and darkness kills me. What am I?
Take off my skin I won't cry but you will.
Searing 'cross the pitch-black skies I scream in celebration Yet moments later my outburst through I am naught but imagination.
I go up and never come down no matter how hard you wish. As I get higher more wrinkles crawl onto your face.
Two brothers we are, great burdens we bear. All day we are bitterly pressed. Yet this I will say, we are full all the day, and empty when go to rest.