An exhaustive biographical account of Johannes Kepler. Describes at length his upbringing, childhood, education, personality and scientific endeavors. Focus is on his development of a cosmological model and the laws of planetary motion.

An exhaustive (very exhaustive) biographical account of Johannes Kepler. Describes at length his upbringing, childhood, education, personality and scientific endeavors. Focus is on his development of a cosmological model and the laws of...

An introduction to our solar system: the planets, our Sun and our Moon. Students begin by learning the history and engineering of space travel. They make simple rockets to acquire a basic understanding Newton's third law of motion. They...