Answer:
What is always in front of you but can't be seen?
You may enter, but you may not come in. I have space, but no room, I have keys, but open no lock. What am I?
I sit in a corner while travelling around the world.
I can wake you up in the morning but I require no electricity or winding.
I reach for the sky but clutch to the ground. Sometimes I leave but I am always around.
When is it bad luck to see a black cat?