Are You Serious?

Space/Science » in reply to Evidence, please

Are You Serious?

Mark Eby — 6/1/2001 4:53:40 AM (archived)

Read anything on astrobiology? Do you think current Earth life can live on Mars? Do you think an exchange of viable organisms is going on or has within the last 2 billion years? Read the report at the link I gave Larry for the single cell basis.

Have you heard of the phylogenitic tree? Earth life is ancient most of the major branches have been shown to be ancient. An exchange with an unrelated and independent branch of life ought to throw such a tree in chaos. I'm not sure we could detect transfer of only single celled life though. I'm not sure whether they can place a time line on the distant branches like they have recent ones such as the estimated times for divergence of mammalian lineages. If the times for bacterial line divergence are well established as well, which I think they are, there should be little doubt that the vast majority at least of Earth life is home grown.

Regards,
Mark

The whole thread (22 posts)

SpaceDaily piece by Barry DiGregorio - Alex R. Blackwell - 5/31/2001 8:09:47 PM
- Sample return & valley fever - SDAI-Tech1 - 6/2/2001 3:43:39 PM
- This stuff is nuts - Gary - 5/31/2001 8:57:50 PM
  - Planetary protection - Alex R. Blackwell - 5/31/2001 9:21:48 PM
    - Is 99.9 % Part Way? - Mark Eby - 6/1/2001 4:41:34 AM
      - Zero Threat Contention - Alex R. Blackwell - 6/1/2001 4:50:34 AM
        
        Threat or Hazard? - Mark Eby - 6/1/2001 4:57:41 AM
    - I agree with Zubrin. - Gary - 5/31/2001 10:57:47 PM
      - FWIW, I don't - Alex R. Blackwell - 5/31/2001 11:45:35 PM
        
        IMHO - Mike F. - 6/1/2001 2:06:45 AM
        
        Morphing game - SDAI-Tech1 - 6/2/2001 3:53:12 PM
        
        Dormant, mutated biological forms - Alex R. Blackwell - 6/1/2001 2:33:59 AM
        
        Dutch Elm Disease - Nathan Koren - 6/1/2001 4:04:54 AM
        
        Never say never - Alex R. Blackwell - 6/1/2001 4:27:59 AM
        
        0 vs 1/10^12 - Mark Eby - 6/1/2001 5:01:45 AM
        
        Layman's terms - Alex R. Blackwell - 6/1/2001 5:06:18 AM
        
        I Doubt He's Calculated - Mark Eby - 6/1/2001 5:58:39 AM
      - Look at it this way - Larry J - 5/31/2001 11:14:32 PM
        
        Do Elm Trees Grow On Mars? - Mark Eby - 6/1/2001 4:27:19 AM
        
        Evidence, please - Alex R. Blackwell - 6/1/2001 4:35:10 AM
        
        Are You Serious? - Mark Eby - 6/1/2001 4:53:40 AM
        
        I'm deadly serious - Alex R. Blackwell - 6/1/2001 5:02:23 AM

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The whole thread (22 posts)