A North Carolina State University professor says there's no reason children should think Santa's Christmas journey around the world would be impossible.

"Basically, I believe that technology can explain how Santa Claus gets the presents to all the children in one night," said Dr. Larry Silverberg, professor of mechanical and aerospace engineering. "One of the keys to how Santa does this, is he uses the principles of relativity to give himself more time."

Silverberg theorizes that Santa can stretch time and contract space in what he calls a ‘relativity cloud'.

"Inside the relativity cloud, Santa actually has six months to deliver the presents, whereas in our reference frame, when we watch it, this all happens in the wink of an eye."

Old Saint Nick could also use nanotechnology to ‘grow' presents under the tree in each house, so that all those gifts don't weigh down the sleigh. Reindeer could be bred to fly. A system of antennas could collect children's wish lists, Silverberg explained.

"I think that putting together the complicated elements to be able to deliver all the presents to all the children is the magic," he said. "They use cell phones. They use computer games. Try to get your parents to explain how they work."

Watch the video 'Young Silverbell: A Professor Defends His Santa Claus Theory' here.