Answer:
I am between earth and heaven. What am I?
It's in your hand though you can not feel it. Only you and time can reveal it.
What is eaten but can also eat?
I am an object which is used in baseball. During the day I can't be seen at all. What am I?
I have all the knowledge you have. But I am so small that I can fit into your hands. What am I?
What made Cyclops quit teaching?