The fun-filled quiz book that kids and the whole family will enjoy. Quiz your family and friends with this Space Quiz Book from National Geographic Kids, bursting with questions that will keep everyone guessing and give you hours of fun. How many moons does Mercury have? How long is a day on Venus? What gives Mars its reddish colour? 300 questions on everything from planets and moons to comets, stars, black holes and lots more Brimming with multiple choice and true or false questions Fact-filled answers come with every quiz so you can brush up on your knowledge too Are you up to the challenge?