The weight of an aircraft is distributed all along the aircraft. The fuselage, along with the passengers and cargo, contribute a significant portion of the weight of an aircraft. The center of gravity of the aircraft is the average location of the weight and it is usually located inside the fuselage.
Saturn's rings were discovered in 1610 by Galileo Galilei, although he did not see enough detail to know what they were. In 2004, the Cassini spacecraft began capturing unprecedented images of Saturn's atmosphere and the complex structure of its rings and moons. It is hypothesized that the rings formed when Saturn swallowed one of its moons.
Launched in 1973, Pioneer 11 made a flyby of Jupiter, and used the planetâs gravity to change its trajectory to intercept Saturn. It arrived at Saturn on September 1, 1979, passing just 22,000 km above the surface of Saturn. It took the first ever close up pictures of Saturn, and discovered a previously unknown ring.