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Things affected by space


Sly McFly
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Well, since water is one of the most abundant chemicals in the universe, all we'd have to imagine is a solar system made up almost entirely of this material. There'd be zero-g close to the centre of each water-planet.

 

But I think this belongs more in the exobiology thread, or perhaps in speculations than here.

 

And anyway... a zero-g environment probably wouldn't have any great effect on fish, since they already float in a semi-wheightless state here on earth.

 

regards,

Michael

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Yeah, fish and other aquatic creatures would probably adapt well to 0g. I think birds would have trouble, though, since they don't spend their whole lives in the air, and even then are accustomed to flying under the influence of a gravitational field.

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Well' date=' since water is one of the most abundant chemicals in the universe, all we'd have to imagine is a solar system made up almost entirely of this material. There'd be zero-g close to the centre of each water-planet.

 

[/quote']

 

Hehe, yeah, 0g and trillions of tons of pressure.

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Hehe, yes indeed :) - well depending on planet size, of course. Besides, a water planet would only have a density of about one fifth of the earth's.

 

The implicit question is quite interesting, though: At what maximum pressure can life as we know it exist? Is there even such a maximum value?

The limit doesn't seem to have been reached here on earth, since life exists even in the deepest sub-oceanic canyons. And in those cases the bottleneck seems to be available food / light / heat rather than pressure.

 

Does pressure affect any of waters properties, say its ability to dissolve chemicals?

 

Michael

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Ithink they would adapt to it. Birds could fly with any direction being up but fish I'm not sure about. If they are in a tank full of water that is sealed then they could just swim around. The bladders they use to sink and rise wouldn't work though.

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Does pressure affect any of waters properties' date=' say its ability to dissolve chemicals?

 

Michael[/quote']

 

Gases dissolve more readily in water at higer pressures. (which is why when you open a pop bottle the pop fizzes.

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