6An exciting interactive title chock-full of stars, planets, aliens, and everything out of this world brings National Geographic Kids signature content to a sticker and activity book format. For kids who love our universe, this book features the coolest science kids can't get enough of: our planet Earth, cool asteroids, fun aliens, comets, and so much more. Packed with mazes, spelling and pattern games, drawing activities, and more, kids are sure to love these pages loaded with fun.