Polonnaruwa meteorite: confirmation of Panspermia?

View previous topic View next topic Go down

Polonnaruwa meteorite: confirmation of Panspermia?

Post by Galzi on 13th March 2013, 10:41 am

Scientists claim Algae-like structures found in a meteorite fell in Sri-Lanka last December:

http://www.technologyreview.com/view/512381/astrobiologists-find-ancient-fossils-in-fireball-fragments/
http://arxiv.org/abs/1303.1845

The results of these tests, which the Cardiff team reveal today, are extraordinary. They say the stones contain fossilised biological structures fused into the rock matrix and that their tests clearly rule out the possibility of terrestrial contamination.

[...] Wallis and co. say that one image shows a complex, thick-walled, carbon-rich microfossil about 100 micrometres across that bares similarities with a group of largely extinct marine dinoflagellate algae.

They say another image shows well-preserved flagella that are 2 micrometres in diameter and 100 micrometres long. By terrestrial standards, thatís extremely long and thin, which Wallis and co. interpret as evidence of formation in a low-gravity, low-pressure environment.


Skepticism is required, as pointed out by Phil Plait:

http://www.slate.com/blogs/bad_astronomy/2013/03/11/meteorite_life_claims_of_fossils_in_a_meteorite_are_still_wrong.html

I read the paper, and really itís more of the same as from the first paper. In some ways, itís even shakier; they provide lots of technical data that gives their work a veneer of credibility, but when you look a bit deeper you find they didnít do a lot of critically necessary tests to establish the veracity of their claims. All the technical stuff obfuscates the fact that they missed the boat in some very basic ways.

In a nutshell, they donít establish the samples they examined were actually meteorites. They donít establish they were from the claimed meteor event over Sri Lanka in December 2012. And perhaps most telling, they donít eliminate the possibility of contamination; that is, diatoms got into the samples because those rocks were sitting on the Earth where diatoms are everywhere.

Thereís more, too, including some unusual methods if youíre trying to establish a paradigm-overthrowing claim: They donít consult with outside experts (including those in the fields of meteorites and diatoms), they donít get independent confirmation from an outside lab, and they published in a journal that is, um, somewhat outside the mainstream of science.

Galzi
Planetary Embryo
Planetary Embryo

Number of posts : 86
Age : 31
Location : Venetia et Histria
Registration date : 2012-06-03

View user profile

Back to top Go down

Re: Polonnaruwa meteorite: confirmation of Panspermia?

Post by Lazarus on 13th March 2013, 1:29 pm

Wickramasinghe and the Journal of Cosmology strike again!!!!111oneeleven

No more convincing than the last time round, really.
avatar
Lazarus
dG star
dG star

Number of posts : 2783
Registration date : 2008-06-12

View user profile

Back to top Go down

View previous topic View next topic Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum