I thought about the chances for meteorites from Venus or even Mercury a couple of days ago, too. My conclusion (which isn’t a scientific one, just an educated guess): Venusian atmosphere is so dense that it will slow down an impacting body considerably (reducing his energy) and slow down ejecta as well (making it impossible to reach escape velocity). With Mercury, I guess the sun will be the “big catcher” that will collect all ejected material.

 

But once again, I am not a scientist J

 

Bernhard

 

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Howard Wu
Sent: Wednesday, October 22, 2003 7:41 PM
To: [EMAIL PROTECTED]
Subject: Re: [meteorite-list] Cosmos 96/Kecksburg-Venus Question

 

A little off the subject but was up early thinking about this. The Russians did eventually land on Venus and got atmospheric isotope %.  Been reading about NWA011 age ~2GY? O isotopes seem wrong but the age would be about right. Why probably ot that one, Venus still has activce volcanos thus basaltic material.  Theorectically how much more difficult would it be for a Venusian to find it's way to earth? What would we expect in a Venunsian basalt meteorite or why haven't any been identified?

 

Howard Wu

Francis Graham <[EMAIL PROTECTED]> wrote:

>Interestingly, the
>spacecraft in question appears to have been a
>Venera lander (a mission to
>Venus) that failed to leave parking orbit. More
>info, including (highly
>critical) comments if this was the source of the
>Kecksburg bolide, can be
>found at:

Soooo... it now appears possible the USA has a
Venera lander. I wonder where all the stuff (including
the Upper Volta meteorite mentioned in the earlier
NASA memo) is?
For that matter, I wonder where Clarence Caldwell's
airplanes are?
Clarence Caldwell was a aviation experimenter that
made airplanes with round wings in the 1930's. Nothing
dramatic, I am afraid, just standard piper-cub like
airplanes with round wings and propellers. No strange
powers.
Nonetheless, when the UFO controversy broke out, in
the late 1940's, the USAF sent a ! black bag team and
got his airplanes out of a tobacco curing shed he left
them in years before. This was mistakenly publicized
by the local police chief in local papers near Glen
Burnie, MD.
The airplanes were carted off to--where? What
became of them? They would be good for a local
aviation history museum. But that is off topic, except
by comparison to the Kecksburg "meteorite" case, so I
go no further.
Francis Graham


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