Flail Chest (Definition) Flail chest is a life threatening medical condition in which multiple segments of the rib cage have been broken and are loosened. These segments cause severe bruising and damage to the lung. ...Read more.
The Milky Way is the second-largest galaxy in the Local Group, with its stellar disk approximately 100,000 ly (30 kpc) in diameter, and, on average, approximately 1,000 ly (0.3 kpc) thick.
This red hypergiant is among the largest known stars in our galaxy. It has an estimated radius between 1,800 and 2,100 times the radius of the Sun. At this size it would reach nearly to the orbit of Saturn if placed in our solar system.