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.
Currently, scientists believe that the largest star in the known universe is NML Cygni, a red hypergiant found in the Cygnus constellation. Discovered by astronomers Neugebauer, Martz & Leighton (from where it gets its designation âNMLâ) in 1965, it measures 1,650 solar radii (1,147,575,000 KM).