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.
Our Galaxy = Milky Way. Milky Way Galaxy Shape = Disk Shape with a central core and multiple, spiral, arms reaching out. Milky Way Size = 1.5 Light Years thick; 1500 light years wide.