Flail Chest. Flail chest describes a situation in which a portion of the rib cage is separated from the rest of the chest wall, usually due to a severe blunt trauma, such as a serious fall or a car accident.
The Moons of Saturn. Saturn has 52 known satellites as of 2008, 7 of which were discovered by the Voyager spacecraft. The largest and most interesting is Titan, which is 3600 miles in diameter and 922,000 miles from Saturn. It is the only satellite to have a thick atmosphere, and a surprisingly dense one, too: 1.6 atmospheres.
Deepening the mystery about the moons is the fact that each ring orbits at a different speed around the planet. Saturn is not the only planet with a ring system. All of the gas giants have rings, in fact. Saturnâs rings stand out because they are the largest and most vivid. The rings have a thickness of up to one kilometer and they span up to 482,000 km from the center of the planet. The rings are named in alphabetical order according to when they were discovered.