starting altitude
81space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …
82Avro Canada CF-105 Arrow — CF 105 Arrow Photo from the Canadian Department of National Defence Role Interceptor …
83Pan American World Airways — Pan Am redirects here. For other uses, see Pan Am (disambiguation). Pan American World Airways IATA PA ICAO …
84Sonora — For other uses, see Sonora (disambiguation). Sonora Estado Libre y Soberano de Sonora   State   …
85Pan-American Highway (South America) — This article describes the Pan American Highway s routing in South America from north to south. For the North America portion of the route, please see Pan American Highway (North America). Venezuela The Pan American Highway begins its path in… …
86List of National Football League records (individual) — This is a list of records set by individual players in various categories in the National Football League. Contents 1 Service 2 Scoring 2.1 Touchdowns 2.2 Points after touchdown …
87Gravity turn — A gravity turn or zero lift turn is a maneuver (see trajectory optimization) used in launching a spacecraft into, or descending from, an orbit around a celestial body such as a planet or a moon. This launch trajectory offers two main advantages… …
88F-14 Tomcat — infobox Aircraft name= F 14 Tomcat caption= An F 14A Tomcat from the USS Nimitz during Operation Southern Watch type= Interceptor/multi role Fighter aircraft manufacturer= Grumman Northrop Grumman first flight= 21 December 1970 introduction=… …
89Space Shuttle — STS redirects here. For other uses, see STS (disambiguation). This article is about the NASA Space Transportation System vehicle. For the associated NASA STS program, see Space Shuttle program. For other shuttles and aerospace vehicles, see… …
90earth — /errth/, n. 1. (often cap.) the planet third in order from the sun, having an equatorial diameter of 7926 mi. (12,755 km) and a polar diameter of 7900 mi. (12,714 km), a mean distance from the sun of 92.9 million mi. (149.6 million km), and a… …
