Why doesn't the sky fall?

[Ron Van Putte]

On Aug 15, 2005, at 1:21 PM, Atwood, Mark wrote:

> And when you’re done hashing that one out (I’m pretty sure gravity 
> DOES pull the air molecules down) I’d love to hear the complete 
> explanation of why water is “wet”.  

Yeah, since we already know why the sky is blue.

Ron Van Putte

> From: discussion-request at nsrca.org 
> [mailto:discussion-request at nsrca.org] On Behalf Of J.Oddino
> Sent: Monday, August 15, 2005 2:16 PM
> To: discussion at nsrca.org
> Subject: Why doesn't the sky fall?
>  
> I thought it was time to stir the pot while we wait for the results 
> from the Worlds.
> Can anyone explain why gravity doesn't pull all the air molecules down 
> to earth?  Are they lighter than space?  What is their mean speed?
> I don't think this will help answer the weathervaning question and 
> won't help us fly any better but I thought it might be fun.
> Jim O
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