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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.

Northern lights

Discuss non-rocket topics, TV, Movies or even general science here.
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bugwubber
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Re: Northern lights

Post by bugwubber » Wed Jan 22, 2014 12:38 am

Got nothing from January but here's some from 2013 and earlier.

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bugwubber
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Re: Northern lights

Post by bugwubber » Wed Jan 22, 2014 12:56 am

May 2013 was the strongest we've seen so far.
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