The stratosphere, mesosphere and lowest part of the thermosphere are collectively referred to as the middle atmosphere, which spans heights from approximately 10 kilometres (33,000 ft) to 100 kilometres (62 mi).
Terrell, Texas. Not to be confused with Terrell County, Texas. Terrell is a city in Kaufman County, Texas, United States. As of the 2010 census, the city population was 15,816. Terrell is located 32 miles (51 km) east of Dallas.
Carson County, Texas. Carson County is a county located in the U.S. state of Texas. As of the 2010 census, its population was 6,182. The county seat is Panhandle. The county was founded in 1876 and later organized in 1888. It is named for Samuel Price Carson, the first secretary of state of the Republic of Texas.