Surely you'd like to know where the Earth ends what surrounds the Earth how far it is to the moon and the stars why the stars sparkle why a ball you throw up always falls down why it's warmer in the sun in summer why the moon is round-one day and crescent-shaped another and what other planets there are besides the Earth. The answers to these and many 'other questions are contained in br. Klushantsev's book all about the telescope.