
Rocket, one transportation to outer space or moon at present. self-propelled device that carries its own
fuel, as well as the oxygen, or other chemical agent, needed to burn its fuel.
Most rockets move by burning their fuel and expelling the hot exhaust gases that
result. The force of these hot gases shooting out in one direction causes the
rocket to move in the opposite direction. A rocket engine is the most powerful
engine for its weight. Other forms of propulsion, such as jet-powered and
propeller-driven engines, cannot match...