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A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel (the engine of the rocket) is constructed from thin plastic or other non metallic materials (usually a used plastic soft drink bottle) weighing 1,500 grams or less. The water is forced out by compressed air. It is an example of Newton's third law of motion.

ISS spotted another satellite (?)

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ptx
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ISS spotted another satellite (?)

Post by ptx » Sat Aug 16, 2014 6:59 pm

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U.S. Water Rockets1
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Re: ISS spot another satellite

Post by U.S. Water Rockets1 » Sat Aug 16, 2014 9:32 pm

Are you sure that's not X-13?


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ptx
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Re: ISS spot another satellite

Post by ptx » Sun Aug 17, 2014 10:31 am

U.S. Water Rockets1 wrote:Are you sure that's not X-13?
I think you probably meant X-37B, but yes it can also be a military satellite.


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