Why did Uuq become Fl? Why is the sky blue? Why is the sky black? What is spaghettification? There's a problem with the typical quiz. It always features far too much sport, 1980s pop and celebrity gossip - and not nearly enough science. How Many Moons Does the Earth Have? is the ultimate solution. Test your knowledge to the limit with a sizzling collection of brain-stretching, science-based questions in two eight-round quizzes. Turn the page to g...