The present book, Space Science and Electronics is one among the five books of the series, Children's Encyclopedia – The World of Knowledge. The book has been broadly divided into two parts: The first part (Part-I) focusses on The Universe, The Stars, The Solar System, The Meteorites, The Comets, Space Exploration, The Earth, All about Earthquakes and Volcanoes, Mountains, Oceans, etc., while the second part or Part-II is quite vast and deals with the various modes of transport, such as The Roadways, Railways, Airways, Waterways, The Supersonic Means of Transportation, and a comprehensive introduction and description of various important electronic gadgets like Transistor, Transformer, Capacitor, Inductor, Resistor, Newspapers and Magazines, Television, Internet, etc. Hence dear readers, grab the book as soon as you can, for it's a treasure trove of knowledge and information, and if you happen to be a school student, you can even use it as a reference book or guide. Happy Reading and Learning too!