[meteorite-list] Panspermia, Reverse Panspermia & Life In Space

[Greg Hupe]

Yep!
Here's proof:
http://foreverloyal.files.wordpress.com/2008/09/marvin_the_martian.jpg


----- Original Message ----- 
From: "Meteorites USA" <eric at meteoritesusa.com>
To: <meteorite-list at meteoritecentral.com>
Sent: Friday, June 05, 2009 1:17 AM
Subject: [meteorite-list] Panspermia, Reverse Panspermia & Life In Space


> Hi list,
>
> I know I've posted a lot today, but bear with me. I've been doing some 
> research since I found the article on the meteorite that Mars rover 
> Opportunity found on Mars earlier and it got me to thinking about how it 
> got there and where it was from. This led to more research and more 
> questions...
>
> We know meteorites come from other celestial bodies, whether they be from 
> asteroids, comets, or planets. All types of meteorites have been found on 
> Earth but... What about the reverse?
>
> We know it happens because we have lunar and martian meteorites here on 
> Earth. Over the last few months I've been reading about panspermia and 
> artificial planet seeding too which are very interesting topics.
>
> You can imagine the force a huge asteroid would exert on the crust of our 
> planet during an impact event and would eject quite a bit of material into 
> space.
>
> This all brings up some very interesting questions... If Panspermia is a 
> theory, then wouldn't reverse panspermia (life originating from Earth) 
> suggest it's very plausible and not just possible to seed life on other 
> planets from another by impact, travel and time?
>
> Having said that let me illustrate a scenario. A huge asteroid impacted 
> Earth millions of years ago throwing millions of tons of debris into our 
> atmosphere. Some of this debris will escape Earth's gravity and make it 
> into space. How much is arguable. Wouldn't it be possible for some microbe 
> or bacteria to be preserved deep inside a clump of Earth, and flash frozen 
> in the iciness of space?
>
> How many billions of bacteria, and microbes, or even insects have been 
> launched into space over the hundreds or even thousands of large impacts 
> the Earth has been subject to since the beginning of time? Look at the 
> jungles of South America and Africa and other tropical regions. The 
> density of life in any given square foot is higher than on any other place 
> on the planet. If a large Asteroid impacted this region you can imagine 
> the sheer numbers of "life forms" that escaped Earth.
>
> Survivability is the issue. If the microbe or "life form" is deep enough 
> within the stone, rock, or clump of earth, wouldn't it be preserved. 
> wouldn't this Earth rock act as a capsule to transport life outside our 
> own solar system? Current science tells us that the temperature of the 
> interior of a meteoroid entering our atmosphere is relatively low. In fact 
> it is usually ambient to space. In other words cold! Frozen even. This is 
> sufficient to allow a microbial life form to survive isn't it? Look up 
> Water Bear on Google...
>
> http://www.astrobio.net/news/modules.php?op=modload&name=News&file=article&sid=2905&mode=thread&order=0&thold=0
>
> http://www.space.com/scienceastronomy/081016-am-tardigrade-toughness.html
>
> Wouldn't this mean that there could be space rocks out there with "life" 
> within them right now? Life that came from Earth? And if there's life out 
> there that comes from Earth, it wouldn't take a rocket scientist to guess 
> that there might be other material out there that might just have come 
> from another habitable solar system. I know these are big jumps and 
> guesses, but isn't it possible considering the sheer length of time, the 
> age of our planet, and the number of impact events over this time period 
> on other celestial bodies and planets?
>
> I mean we are talking about billions of years here...
>
> Your thoughts?
>
> -- 
> Regards,
> Eric Wichman
> Meteorites USA
> http://www.meteoritesusa.com
> 904-236-5394
>
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