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.
The Diameter of the Milky Way. [/caption] The diameter of the luminous Milky Way is between 100,000 and 120,000 light years across, but that number could be much larger if you take into account dark matter. It all depends on where you measure the edge of the Milky Way to beâ¦.