Johannes Kepler's Planetary Model

O​rigin
Johannes Kepler was a German mathematician, astronomer, and astrologer. A key figure in the 17th century scientific revolution, he is best known for his laws of planetary motion, based on his works Astronomia nova, Harmonices Mundi, and Epitome of Copernican Astronomy. These works also provided one of the foundations for Isaac Newton's theory of universal gravitation.

Effects
When idle, this rudimentry model of the solar system rotates around itself. Each of the small brass balls cam be detatched and each has its own orbital field directly related to the size of the planet. The smallest can only maintain particles of dust and light objects like paper, while the largest, Jupiter, can interrupt the trajectory of fast moving projectiles.

Objects will maintain an orbit around the holder of the sphere until it it either dropped or retuned to the model, whereupon it will either continue on its original course or simply drop to the floor. In some cases where the satellite has enough momentum, it will ricochet away from the holder, making this artifact useful for deflecting assault.