Moving Planets Around

An introduction to the laws of celestial mechanics and a step-by-step guide to developing software for direct use in astrophysics research. This book offers both an introduction to the laws of celestial mechanics and a step-by-step guide to developing software for direct use in astrophysics research. It bridges the gap between conventional textbooks, which present a rigorous and exhaustive exposition of theoretical concepts, and applying the theory to tackle real experiments. The text is written engagingly in dialogue form, presenting the research journey of the fictional Alice, Bob, and Professor Starmover. Moving Planets Around not only educates students on the laws of Newtonian gravity, it also provides all that they need to start writing their own software, from scratch, for simulating the dynamical evolution of planets and exoplanets, stars, or other heavenly bodies.

Thousands of years ago, people looked at the sky in wonder, fascinated by the motions of a few wandering stars. Nobody understood where these wandering objects--now named Mercury, Venus, Mars, Jupiter, and Saturn--came from, why they moved, or what drove their motions through the sky. Today, people know these objects are planets, but the quest to reach this understanding took thousands of years, and the consequences were profound. Famous scientists Johannes Kepler, Edmund Halley, Isaac Newton, and others discovered the laws of gravity and planetary motion, using these laws to explain the workings of the solar system. Their findings allowed the human race to find its way from planet to planet with unmanned probes and eventually allowed people to reach the moon. In "Planetary Motion," learn how scientists have found new planets outside the solar system, and continue their search for planets like Earth.

Edward Grant describes the extraordinary range of themes, ideas, and arguments that constituted scholastic cosmology for approximately five hundred years, from around 1200 to 1700. Primary emphasis is placed on the world as a whole, what might lie beyond it, and the celestial region, which extended from the Moon to the outermost convex surface of the cosmos.

There are many planetary systems other than our own, but it is only through a detailed understanding of the relatively accessible bodies in our solar system that a thorough appreciation of planetary science can be gained. This is particularly pertinent with the recent discovery of extra-solar planets and the desire to understand their formation and the prospect of life on other worlds. Planetary Science: The Science of Planets Around Stars focuses on the structure of planets and the stars they orbit and the interactions between them. The book is written in two parts, making it suitable for students at different levels and approaching planetary science from differing backgrounds. Twelve independent descriptive chapters reveal our solar system and the diverse bodies it contains, including satellites, planetary rings, asteroids, comets, meteorites, and interstellar dust. These chapters are accompanied by 42 detailed topics that discuss specialized subjects in a quantitative manner and will be essential reading for those in higher level courses. Coverage includes mineralogy, stellar formation and evolution, solar system dynamics, atmospheric physics, planetary interiors, thermodynamics, planetary astrophysics, and exobiology. Problems and answers are also included. Planetary Science: The Science of Planets Around Stars presents a complete overview of planetary science for students of physics, astronomy, astrophysics, earth sciences, and geophysics. Assuming no prior knowledge of astrophysics or geophysics, this book is suitable for students studying planetary science for the first time.

1. Astronomical Background. 2. Types of retrogression- rotation and revolution. 3. Importance of Retrograde planets-views of classics & savants. 4. Karmic theory and retrogression of Mercury & Venus. 5. Retrogression of Mars, Jupiter & Saturn. 6. Dasha/ transit and retrogression. 7. Retrogression and Div. charts, Horary & Mundane affairs. 8. Retrogression and Western Astrology. 9. Six Astronomical Configurations. 10. 15 tables and 43 charts of natives/ natural calamities.

Written in language accessible to elementary students, this resource brings the colossal science of planetary motion within reach of young readers. With beautiful illustrations and interactive experiments, this volume introduces students to the concepts of gravity, force, friction, and much more.