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| | Rocket - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-20) |
 | | A rocket is a vehicle, missile or aircraft which obtains thrust by the reaction to the ejection of fast moving exhaust gas from within a rocket engine. |
 | | Rockets are also used for deceleration, to transfer to a lower-energy orbit, for example to enter into a circular orbit from outside, to de-orbit for landing, for the whole landing if there is no atmosphere (e.g. |
 | | Rockets must be used when there is no other substance (land, water, or air) or force (gravity, magnetism, light) that a vehicle may employ for propulsion, such as in space. |
| www.northmiami.us /project/wikipedia/index.php/Rocket (2270 words) |
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