Answer: Your coffin
I am terrifying and fear inspiring. The physical world cannot touch me. When I am finished, you might not remember what I did. What am I?
I am fast and slow, I go everywhere you go yet you cannot see me, i am in tree's in the sky in plants and in your body pretty much you need me to survive, what am I?
Every nation do I know, But so rarely do I go Anywhere, Sometimes people Come and stare, Touch me here, And poke me there, Spin me round, Then leave me alone When what they sought, They have found. What am I?