What is it that sits here between us?

What is it that sits here between us?
How is it sits so still?
Apart from us,Yet close enough to be.
Far enough to claim our hearts And hold us prone
Still big enough to keep us here.
Still small enough to see us still.
What it is will still be ours.
And what it means will tell us true
And where we are will hold us up
Tell me now what we hold.
And pass it on to me.