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  #1  
Old 02-08-2012, 08:55 AM
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vacum of space

What keeps the vacum of space from sucking the air and gases around planets? Anyone know?

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Old 02-08-2012, 08:57 AM
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We need to get Mr. Dyson to look into that!
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Old 02-08-2012, 08:58 AM
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There's this little thing called gravity.
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Old 02-08-2012, 08:58 AM
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Or perhaps mr. Newton. It's gravity mostly
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Old 02-08-2012, 08:58 AM
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Originally Posted by oldsinner111 View Post
What keeps the vacum of space from sucking the air and gases around planets? Anyone know?
I think it's the two u's in the word...

Could be gravitational pull though....
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Old 02-08-2012, 09:18 AM
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It is only a vacuum compared to our planet which at sea level has the atmospheric pressure caused by the weigh of our atmosphere piled up.
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Old 02-08-2012, 09:25 AM
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so a spining space station could have a outside air to work in and farm radation proof plants
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Old 02-08-2012, 09:33 AM
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so a spining space station could have a outside air to work in and farm radation proof plants
What? total recall?
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Old 02-08-2012, 09:59 AM
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so a spining space station could have a outside air to work in and farm radation proof plants

IF it had enough mass. That would be a pretty big space station. Maybe it would even be called a planet.
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Old 02-08-2012, 10:01 AM
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What keeps the vacum of space from sucking the air and gases around planets? Anyone know?

Liberals
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Old 02-08-2012, 10:58 AM
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Old 02-08-2012, 11:28 AM
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so a spining space station could have a outside air to work in and farm radation proof plants
As Larry has already commented, it's mass that's involved in gravity. Spinning won't cause a body to hold an atmosphere on the outside - and it takes quite a bit of mass to do so. The earth's moon, for example, doesn't cut it.
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Old 02-08-2012, 12:41 PM
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The moon also doesn't rotate on an axis
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Old 02-08-2012, 12:49 PM
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To clarify: I intended the moon to be an example of something that has significant mass (say, compared to a space station), yet still has insufficient mass to retain much of an atmosphere.

They do their farming there in tunnels, sealed to retain the atmosphere. Just ask Manuel Garcia O'Kelly-Davis.
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Old 02-08-2012, 12:56 PM
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One cool program that you should watch is 'The Fabric of the Cosmos', a NOVA show on PBS. It's very cool about explaining some really complex stuff.

NOVA | The Fabric of the Cosmos

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