What's Up? takes you on a journey of discovery up to the stars and beyond.

Join two inquisitive children who travel higher and higher as they zoom past towering skyscrapers, gigantic mountains, jumbo jets, satellites and stars - until at last the two friends find out what really is up there.

But then how do they get down? The Wonderwise series presents facts in a way that will inspire young children's imaginations about the world around them.