Barrett's esophagus refers to an abnormal change in the cells of the lower portion of the esophagus. It is characterized by the replacement of the normal stratified squamous epithelium lining of the esophagus by simple columnar epithelium with goblet cells (which are usually found lower in the gastrointestinal tract).
U.S. Space Camp is a camp and related programs owned and operated by the Alabama Space Science Exhibit Commission's U.S. Space & Rocket Center in Huntsville, Alabama.
Brazil's Ministry of Aeronautics has space launch and tracking facilities in northeast Brazil on the country's 4,603-mi.-long Atlantic Ocean coast near Alcantara and Natal, not far south of the equator. The European Space Agency space launch site is nearby on the Atlantic Coast at Kourou, French Guiana, north of the equator. VLS.