Answer:
What's a place you have left but didn't enter?
Lighter than what I am made of, More of me is hidden Than is seen.
My first is in blood and also in battle. My second is in acorn, oak, and apple. My third and fourth are both the same. In the center of sorrow and twice in refrain. My fifth starts eternity ending here. My last is the first of last, Oh Dear.
Many have heard it, but nobody has ever seen it. It will not speak until spoken to. What is it?
I am the hole in the night, the ever watchful eye. I return in a cycle, to enlighten the sky.
What never gets any wetter no matter how hard it rains?