(from the article `rocket and missile system`) The flight path of a ballistic missile has three successive phases. In the first, called the boost phase, the rocket engine (or engines, if the ... Found on http://www.britannica.com/eb/a-z/f/36
The path followed by the center of gravity of a spacecraft during flight; also known as the spacecraft`s trajectory. The path is tracked with reference to any point on Earth, or it may be tracked with reference to a star. Found on http://www.daviddarling.info/encyclopedia/F/flight_path.html