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.
God's power in Numbers. The Milky Way galaxy we live in roughly contains 100 billion stars. Astronomers have also estimated that the number of galaxies in the observable universe is 200 BILLION! The current diameter of the observable area is about 93 BILLION light years. The width of the ENTIRE universe (the parts we can and cannot see) is bigger still. In comparison, the width of a typical galaxy is only 30,000 light-years.