Re: Fungal strains in space spark worry - we might have already contaminated --

"Kualinar"  wrote in message news:[email protected]...

Le 2026-05-08 à 10:58, Jim Wilkins a écrit :
> "Jim Wilkins"  wrote in message news:[email protected]...
>
>> This is significant because it also affects how returned samples must be 
>> treated and handled.
>
> In brief, we can't sterilize a sample that cost billions until we learn 
> that we must.
>
> Have we already been infected and developed immunity?
> https://www.space.com/mars-meteorites-on-earth-mystery
> "Meteorites from a variety of sources have been discovered across Earth's 
> surface for thousands of years, but Mars wasn't suggested as a possible 
> source of this bombardment until the 1970s when measurements of the 
> Martian atmosphere made by NASA's Viking orbiters were found to match 
> gases locked in these space rocks."
>
And, we can assume that rocks from the Earth made their way to Mars, as
well as Jovian moons.

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While that may be possible Earth's thick atmosphere absorbed most of Artemis 
II's Mach 33 velocity. There is no evidence of any meteorites from Venus 
which also has a dense and distinctive atmosphere.