Compressed air wouldn't work too well on the moon, he, he.. but once you got 
your rig up why stop at one rock. Then you could bring the world powers to 
there knees and keep firing away till them made you king. Then you could call 
them whatever you wish.


--- On Thu, 3/19/09, Meteorites USA <e...@meteoritesusa.com> wrote:

> From: Meteorites USA <e...@meteoritesusa.com>
> Subject: [meteorite-list] Artificial Lunar Meteorites?
> To: d...@fallingrocks.com, "meteorite-list@meteoritecentral.com" 
> <meteorite-list@meteoritecentral.com>
> Date: Thursday, March 19, 2009, 10:30 PM
> I've got a few silly questions...
> 
> Let's say you had a large canon powered by compressed
> air or some other high pressure gas.
> 
> If you fired a projectile ( a moon rock ) from the surface
> of the moon toward Earth, would you be able to create enough
> force to reach escape velocity?
> If so, how long would it take for that projectile to reach
> Earth?
> Would the projectile continue to increase speed after
> leaving the barrel of the canon or does it stay at the
> velocity from which it leaves the barrel?
> If all these things were possible, and you were able to
> calculate velocity, trajectory, and the entry point into the
> Earth's atmosphere, would the stones survive the trip
> through our atmosphere? And/or how large would the
> projectile have to be to survive atmospheric entry? (I know
> this is a loaded question, please don't get caught up on
> this one, the next one is the question I'm really
> curious about) ;)
> 
> And finally...
> 
> If the projectile (moon rock) did survive all of this,
> would it be considered a meteorite?
> 
> Scientifically speaking wouldn't this be an interesting
> experiment?
> 
> Send a lander to the moon with a BIG canon and launch some
> moon rocks dude! ;)
> 
> Regards,
> Eric Wichman
> Meteorites USA
> 
> 
> In response to
> 
> Dave Gheesling wrote:
> 
> "...Meteorites don't enter our atmosphere attached
> to spheres, and presumably that artificial contraption may
> have made for a different-than-typical result...."
> 
> All best,
> Dave
> www.fallingrocks.com
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