Answer:
I'm the start of eternity and the end of space. There are two of me in heaven and one in hell.
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
What falls down but never gets hurt?
Dry though I may be, I am still a sea.
It can be used onstage or to express admiration. What is it?
What question can you never honestly answer yes to?