1825 - Pierre Laplace completes his study of gravitation, the stability of the solar system, tides, the precession of the equinoxes, the libration[?] of the Moon, and Saturn's rings in Mecanique Celeste[?]
1843 - John Adams predicts the existence and location of Neptune from irregularities in the orbit of Uranus
1846 - Urbain Leverrier predicts the existence and location of Neptune from irregularities in the orbit of Uranus
1849 - Edouard Roche[?] finds the limiting radius of tidal destruction and tidal creation for a body held together only by its self gravity, called the Roche limit, and uses it to explain why Saturn's rings do not condense into a satellite
1856 - James Clerk Maxwell demonstrates that a solid ring around Saturn would be torn apart by gravitational forces and argues that Saturn's rings consist of a multitude of tiny satellites
1866 - Giovanni Schiaparelli realizes that meteor streams occur when the Earth passes through the orbit of a comet that has left debris along its path
1978 - Peter Goldreich[?] and Scott Tremaine[?] present a Boltzmann equation[?] model of planetary-ring dynamics for indestructible spherical ring particles that do not self-gravitate and find a stability requirement relation between ring optical depth and particle normal restitution coefficient
... in the gyroscope.
The physics of this device looks confusing at first sight, but is surprisingly simple. It can easily be understood with a little knowledge of ...