Answer:
I am whole but incomplete. I have no eyes, yet I see. You can see, and see right through me. My largest part is one fourth of what I once was.
I am the hole in the night, the ever watchful eye. I return in a cycle, to enlighten the sky.
Always old, sometimes new. Never sad, sometimes blue. Never empty, sometimes full. Never pushes, always pulls.
Ten men's strength, ten men's length. Ten men can't break it, yet a young boy walks off with it.
A kind of weather that comes your way, but add a "D" and it will run away
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?