The perineal region is that part of the trunk below the pelvic diaphragm. It is diamond shaped and has the same boundaries as the pelvic outlet. It is divided into an anterior, urogenital triangle and a posterior, anal triangle.
Definition for &QUOT;Quasar&QUOT; an incredibly distant, and thus old, celestial objectâ¦ View More
Quasar Cluster: Largest Object In The Universe May Disprove Einstein's Cosmological Principle. Astronomers have discovered the largest object in the universe. In fact it's so big, it might challenge a key principle of cosmology predicted by none other than Einstein himself. The object is a group of quasars from that four billion light years across. Together they form the largest structure in the universe, researchers at the University of Central Lancashire reported in the journal of the Royal Astronomical Society. The quasar structure is more than 1,600 times as big as our galaxy, the Milky Way.