This document provides information about several major cities in Texas, including Houston, Austin, Dallas, San Antonio, El Paso, Galveston, and Amarillo. Houston is described as home to the Astrodome and NASA, with sports teams including the Texans, Rockets, Comets, and Astros, and a population over 4.6 million. Austin is the state capital with a population over 650,000, home to the University of Texas, and known for Dell computers. Dallas is noted for its sports teams of the Cowboys and Mavericks.