Answer:
They're big and yet so far away, We see them at the end of day. They're small and they're above. We see them when we close our eyes, Each time we are in love.
It keeps you on the ground and stops things from floating around. What is it?
What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?
What is something that can go up quite easily, but is not as easy to bring back down?
What has many keys but cannot open a single lock or door?
I am your mother's brother's only brother in law. Who am I?