wondered what's out there in the universe? How many stars are there in the sky? Why can't we count stars? What makes the sky dark in the night and blue in the morning? What are constellations? Who was the first person to research on rockets for spaceflight? This box set of 6 Encyclopedias will answer these and more whys for you. Learning is made simpler with well-labelled diagrams and an extensive glossary of difficult words. Bonus: The books in the box set come loaded with Isn't It Amazing-- a section of fun facts to keep you glued for more.