SPACE IN CASE

In the deepest and darkest places of universe, a spaceship was zooming with a boy in it.
The boy said, finally I am almost out of the universe..!
While he was dodging planets and asteroids, a planet turned into his teacher's face and
Said, James ...wake up.. OOHHH James................ wake up ...teacher shoutted....
It turned out to be a nice dream, he was dreaming in the middle of the class..
I told you a thousand times, not to sleep in the class. The teacher screamed.
But I was listening...said James. Really...then what is 8X8?
16 I guess...