Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: thedoc on 15/04/2014 16:59:24

Title: What was concluded about the fossilised bacteria in the Mars meteorite?
Post by: thedoc on 15/04/2014 16:59:24

Derek asked the Naked Scientists:







   







I remember the widespread media coverage regarding the Martian meteorite ALH84001, back in 1996.















Researchers were suggesting that certain features in there resembled micro-fossils - i.e. evidence for life on Mars. For some time it was possible to follow the debate back and forth, but it is a long time ago now and it has all gone quiet.















Was there ever a conclusion to this debate?















Thanks,







Derek McComiskey















What do you think?

Title: Re: What was concluded about the fossilised bacteria in the Mars meteorite?
Post by: Pmb on 06/04/2014 03:25:40

Quote from: thedoc on 05/04/2014 22:30:01

Derek asked the Naked Scientists:
   
I remember the widespread media coverage regarding the Martian meteorite ALH84001, back in 1996.

Researchers were suggesting that certain features in there resembled micro-fossils - i.e. evidence for life on Mars. For some time it was possible to follow the debate back and forth, but it is a long time ago now and it has all gone quiet.

Was there ever a conclusion to this debate?

Thanks,
Derek McComiskey

What do you think?

See http://en.wikipedia.org/wiki/Martian_meteorite

Quote

This meteorite received much attention after an electron microscope revealed structures that were considered to be the fossilized remains of bacteria-like lifeforms. As of 2005, scientific consensus was that the microfossils were not indicative of Martian life, but of contamination by earthly biofilms. However, in 2009, new analyses ruled out earthly and non-biological origins, presenting strong evidence of life on Mars.[18] ALH 84001 is as old as the basaltic and intermediate shergottite groups — i.e., 4.1 billion years old.