[meteorite-list] Fusion Crusted "Meteoroids"

From: Meteorites USA <eric_at_meteoritecentral.com>
Date: Wed, 25 Mar 2009 09:40:55 -0700
Message-ID: <49CA5E97.5020701_at_meteoritesusa.com>

Yup it would be a guess, but doesn't science make guesses (hypotheses)
based on data and knowledge gained from data? Having said that, I think
it's safe to say there's more to it than meets the eye.

Would you like to take a guess? Not that I know the answer ( I do not ).
I'm simply provoking a hypothesis. ;)

It's up to science to prove it...

Eric

Darren Garrison wrote:
> On Wed, 25 Mar 2009 08:21:58 -0700, you wrote:
>
>
>> How many beautifully black and fully fusion crusted meteoroids and
>> asteroids are floating around out there in space?
>>
>
> A fusion crust is formed by the rapid melting and rapid resolidifying of the
> meteoroid, caused by heat generated by a meteoroid passing through the
> atmosphere of a planet, decelerating, and having some of it's massive amount of
> kinetic energy converted to light, sound, and heat, due to conservation of
> energy. So a meteroid in space with a fusion crust would have had to have
> grazed deep enough in to the atmosphere of a planet or moon and then skipped
> back into space. Any attempt (by anyone, no matter how expert) to give an
> approx. number of times that this has happened on all atmosphere-posessing
> planets and moons AND the meteoroid wasn't destroyed on a later pass near the
> planet/moon AND it hasn't happened so long ago that the normal erosion in space
> has broken up that fusion crust would be a pure guess. This MIGHT be one:
>
> http://en.wikipedia.org/wiki/The_Great_Daylight_1972_Fireball
>
> I can imagine that a massive nearby gamma ray burst might also be able to melt a
> thin fusion crust around meteroids in space, but if such an event had happened
> in the recent geological past, we would have noticed it by the fact of all being
> dead.
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-- 
Regards,
Eric Wichman
Meteorites USA
http://www.meteoritesusa.com
904-236-5394

Received on Wed 25 Mar 2009 12:40:55 PM PDT