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 nearest star is 4.2 light years (25 trillion miles) away, the Milky Way galaxy is about 100,000 light years in diameter, and the Universe is currently thought to be 27.4 billion light years across (or 13.7 billion years old, same thing since it started with a Big Bang.