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.
Saturn is much larger than Earth. More than 700 Earths could fit inside Saturn. Saturn's rings are thousands of miles wide. If there were cars in space, it would take more than a week to drive across some of Saturn's rings. On the other hand, the rings are quite thin. They are only about 30 to 300 feet thick. Cassini is the latest NASA spacecraft to explore Saturn. Cassini left Earth in 1997 and arrived at Saturn seven years later, in 2004. The spacecraft has been orbiting the planet since then. Cassini sends new pictures and information back to Earth all the time. Cassini has taken amazing pictures of Saturn's rings. More about Saturn's Rings: Kids Space Solar System Kids: Saturn