New Mars Forums

cIclops

Member

Registered: 2005-06-16

Posts: 3,230

Re: Has Earth already seeded life on Mars and elsewhere?

Experiment shows 1 in 10,000 bacteria survive 5kms/sec impact ... that's a good start and an interesting experiment.

Nature news article was here  - subscription only now

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Grypd

Member

From: Scotland, Europe

Registered: 2004-06-07

Posts: 1,879

Re: Has Earth already seeded life on Mars and elsewhere?

There is also the possibility that some of the earliest probes where not exactly biologically clean.

But it will take us finding Martian life then finding out its structure, but even then the likehood is it will be if found similar to what we have on Earth.

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Chan eil mi aig a bheil ùidh ann an gleidheadh an status quo; Tha mi airson cur às e.

cIclops

Member

Registered: 2005-06-16

Posts: 3,230

Re: Has Earth already seeded life on Mars and elsewhere?

Emily Lakdawalla posted a report about a paper at LPSC 2006, looking at transfer of organisms to Europa, models show hundreds of rocks reaching the Jovian moons for every large impact on Earth! So it seems reasonable to assume that thousands must be reaching Mars. Encased inside rocks they could be transported deep underneath the martian surface on impact.

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[color=darkred]Let's go to Mars and far beyond -  triple NASA's budget ![/color] [url=irc://freenode#space]  #space channel !! [/url] [url=http://www.youtube.com/user/c1cl0ps]   - videos !!![/url]

Tholzel

Banned

From: Boston

Registered: 2004-03-20

Posts: 56

Re: Has Earth already seeded life on Mars and elsewhere?

Stop losing sleep over this worry.  The extremely thin atmospher on Mars means its surface has been thoroughly sterilized by ultraviolte radiation from the sun--as the 1976 Viking landers discovered.  And cosmic rays not blocked by a magnetic field (e.g., van Allen belt) have done the rest of the job, down to at least several inches of soil.