Presents an introduction to the solar system, describing its origin, planets, moons, the Sun, orbits, and the changes to it that will occur in the distant future.
Each book in this series follows a packet of energy along a journey. Each stage of the journey is described in a short chapter, and we learn what alternative paths the energy might have taken along th
Each book in this series follows a packet of energy along a journey. Each stage of the journey is described in a short chapter, and we learn what alternative paths the energy might have taken along th
